Cryptocurrencies for Beginners: Bitcoin, Ethereum and Safe Investing

According to the SEC (Securities and Exchange Commission), over 52 million Americans own cryptocurrency, representing a 280% increase from 2022. But the reality is that most beginners enter this market without understanding the real risks or how these digital currencies actually work.

You’ve probably heard stories of people who got rich from Bitcoin or lost everything in fraudulent projects. The truth is somewhere in between: cryptocurrencies are a legitimate asset class, but extremely volatile and requiring knowledge before investing.

In this guide, I’ll explain clearly what cryptocurrencies are, how Bitcoin and Ethereum work, where to buy safely through regulated US exchanges, how much you should allocate in your portfolio (spoiler: much less than you think), the real risks, and how to report correctly to the IRS.

What Are Cryptocurrencies and How Do They Work

Cryptocurrencies are decentralized digital currencies that operate without a central bank or government controlling them. They use technology called blockchain to record all transactions publicly and immutably.

Think of blockchain as a giant ledger that everyone can see, but no one can erase or falsify. Each “block” contains a set of transactions, and these blocks are connected in a chain, creating a complete and transparent history.

Differences Between Cryptocurrencies and Traditional Money

The main advantage is decentralization: you control your money without depending on banks. The disadvantage is extreme volatility: the price can rise 50% in one week and drop 40% the next.

How Transactions Are Verified

When you send Bitcoin to someone, the transaction doesn’t go through a bank. Instead:

1. You digitally sign the transaction with your private key (like a super secure password)
2. The transaction is broadcast to the miner network (computers that validate transactions)
3. Miners verify you have the funds and include the transaction in a block
4. The block is added to the blockchain, and the transaction is confirmed
5. The recipient receives the Bitcoin in their wallet

This process takes from 10 minutes (Bitcoin) to 15 seconds (Ethereum), depending on the network.

Bitcoin vs Ethereum: The Two Major Cryptocurrencies

Bitcoin and Ethereum are the world’s two largest cryptocurrencies, but they have very different purposes.

Bitcoin (BTC): Digital Gold

Created in 2009 by an anonymous developer (or group) called Satoshi Nakamoto, Bitcoin was the first cryptocurrency in history. Its goal is to be a digital store of value, like gold.

Key features:

• Limited supply: Only 21 million Bitcoins will ever exist (over 19 million already mined)
• Programmed scarcity: Every 4 years, miners’ rewards are halved (halving)
• Security focus: The protocol is slower but extremely secure
• Market cap: $1.2 trillion (48% dominance of crypto market)

Bitcoin is considered “digital gold” because it has a fixed supply and is used primarily as a store of value, not for everyday transactions (fees can reach $15-30 per transaction during high demand periods).

Ethereum (ETH): The Application Platform

Launched in 2015 by Vitalik Buterin, Ethereum goes beyond being just a currency. It’s a smart contract platform — programs that execute automatically when certain conditions are met.

Key features:

• No supply limit: There’s no maximum number of Ethereum (controlled inflation of ~0.5% per year)
• Smart contracts: Allows creating decentralized applications (DApps), NFTs, DeFi
• Fast transactions: Blocks generated every 12-15 seconds
• Market cap: $480 billion (18% dominance of the market)

Ethereum is used to build applications like decentralized exchanges (Uniswap), blockchain games (Axie Infinity), and DeFi lending systems (Aave).

Practical Comparison

For beginners, Bitcoin is generally simpler to understand and has lower volatility compared to other cryptos (though still very volatile compared to stocks or traditional funds).

Where to Buy Cryptocurrencies Safely in the US

The safest and most legal way to buy cryptocurrencies in the US is through regulated exchanges that follow SEC and FINRA rules.

Trustworthy US Exchanges

FinCEN means Financial Crimes Enforcement Network — the agency that enforces anti-money laundering (AML) and know-your-customer (KYC) regulations.

How to Choose an Exchange

Consider these criteria when choosing where to buy:

1. Regulation: Must be registered with SEC and/or state regulators (check official websites)
2. Security: Two-factor authentication (2FA), cold storage for most assets
3. Liquidity: High trading volume (over $100 million/day) to ensure you can sell when you want
4. Transparent fees: Compare trading fees + withdrawal fees + spread
5. Customer support: English support, fast response time
6. Interface: User-friendly app for beginners

Important: Avoid unregulated foreign exchanges (like certain offshore platforms) if you’re a beginner. They don’t follow US laws and you’ll have difficulties with tax reporting or resolving issues.

Step-by-Step Guide to Buy Cryptocurrencies

1. Choose the exchange: Research and compare the options above
2. Create an account: Provide email, phone, and create a strong password
3. Complete identity verification (KYC): Upload ID photo (driver’s license/passport) and selfie
4. Deposit funds: Link your bank account or debit card and transfer USD
5. Buy cryptocurrency: Go to trading section, choose Bitcoin or Ethereum, set the USD amount and confirm
6. Store securely: Keep on exchange (more convenient) or transfer to your own wallet (more secure for high amounts)

The purchase is processed instantly, and you see the crypto balance in your account immediately. To sell, the process is reversed: sell the crypto, receive USD in exchange wallet, and withdraw to your bank account.

The 5% Rule: How Much to Allocate to Cryptocurrencies

The most important question for beginners isn’t “which crypto to buy,” but “how much of my net worth to put in crypto.” And the conservative answer is: maximum 5% of your portfolio.

Why Only 5%?

Cryptocurrencies are the most volatile asset class that exists. See real examples:

• Bitcoin in 2021: Rose from $28,000 to $69,000 (+146%) then fell to $16,000 (-77%)
• Ethereum in 2022: Fell from $4,800 to $880 (-82%) in the crypto winter
• Terra (LUNA) in 2022: Fell from $120 to $0.00001 in 48 hours — investors lost 99.99%

If you put 30% of your money in crypto and it drops 50% (common occurrence), you lose 15% of your total net worth. If you only put 5% and it drops 50%, you lose 2.5% — a manageable impact.

Recommended Allocation by Profile

Golden rule: Only invest in cryptocurrencies an amount you can lose completely without compromising your bills, emergency fund, or essential financial goals.

Diversification Within Crypto

If you decide to allocate 5% ($5,000 of a $100,000 net worth, for example), divide it like this:

• 60% in Bitcoin ($3,000): Lower relative volatility, longer track record
• 30% in Ethereum ($1,500): Second largest crypto, has practical utility
• 10% in others ($500): Optional, for specific projects (Polygon, Solana, Chainlink)

Avoid putting everything in a single cryptocurrency, especially “meme coins” (Dogecoin, Shiba Inu) or new projects without a track record.

Real Risks of Investing in Cryptocurrencies

Let’s be clear about the risks that many influencers and course sellers hide.

1. Extreme Volatility

Bitcoin’s price can vary 10-20% in a single day. In 2024, there were days with 15% drops in just hours, without apparent reason. This can cause panic and lead beginners to sell at a loss.

How to deal: Invest with a long-term horizon (at least 5 years) and don’t check the price every day.

2. Scams and Fraud

The crypto market is full of scams:

• Ponzi schemes: Promise 10-20% per month in “mining” or “arbitrage” (99% are Ponzis)
• Rug pulls: New projects that disappear with investors’ money
• Phishing: Fake websites that steal your passwords and private keys
• Pump and dump: Groups manipulate small coin prices to profit

How to protect yourself: Use only regulated exchanges, never share your private key, distrust promises of guaranteed returns.

3. Regulatory Uncertainty

The US has clearer crypto regulations now, but rules are still evolving. Legislative changes can:

• Increase taxation (currently 0% to 37% depending on holding period and income bracket)
• Ban certain types of crypto (like unregulated stablecoins)
• Create fees or movement restrictions

4. Risk of Total Loss

Unlike stocks (where the company can fail but you maintain rights) or FDIC-insured accounts (guaranteed up to $250,000), cryptocurrencies have no guarantees.

If you forget your wallet password, lose your private key, or the exchange collapses (like FTX in 2022), you can lose everything.

5. Lack of Consumer Protection

The SEC and FDIC don’t guarantee your money on exchanges. If the exchange is hacked, goes bankrupt, or runs a scam, you probably won’t recover your investment.

That’s why it’s crucial to use large, regulated, reputable exchanges — or transfer your crypto to a hardware wallet (Ledger, Trezor) if you have high amounts (over $50,000).

How to Report Cryptocurrencies on US Taxes

Many people ignore this, but it’s mandatory to report cryptocurrencies to the IRS, even if you haven’t sold anything.

Reporting Rules

You must report if:

1. You owned any cryptocurrency at any time during the tax year (checkbox on Form 1040)
2. You sold, traded, or used crypto for goods/services
3. You had capital gains from crypto transactions

How to Report on Tax Forms

On Form 1040 (main form):

• Check “Yes” to the digital asset question at the top of the form

On Schedule D (Capital Gains/Losses):

• Report each sale with date acquired, date sold, cost basis, proceeds, and gain/loss
• Short-term gains (held < 1 year): Taxed as ordinary income (10% to 37%)
• Long-term gains (held > 1 year): Taxed at 0%, 15%, or 20% depending on income

On Form 8949 (detailed transactions):

• List every crypto sale, trade, or disposal
• Include exchange name, transaction date, amount, cost basis, proceeds

Important: Report at actual cost basis (what you paid), not current market value. If you bought $10,000 in Bitcoin and it’s now worth $30,000, your cost basis is $10,000.

When You Pay Tax on Crypto

You pay tax only when you realize a gain by selling, trading, or using crypto.

Tax table:

Practical example:

1. You bought $20,000 in Bitcoin
2. Sold 14 months later for $50,000 (gain of $30,000)
3. Held for over a year (long-term)
4. If your income is $80,000/year, you pay 15% on the gain: $30,000 × 15% = $4,500 tax
5. Report on Schedule D when filing that year’s taxes (due the following April)

If you held less than 1 year, the $30,000 gain would be added to your ordinary income and taxed at your bracket rate (22% or 24% for most middle-class taxpayers).

Tips to Avoid IRS Problems

• Keep records: Exchange statements, transaction history, receipts
• Use crypto tax software: CoinTracker, TaxBit, Koinly (integrate with exchanges)
• Report everything: Even small amounts, report to avoid discrepancies
• Don’t hide foreign exchanges: IRS receives data from major platforms

If you moved significant amounts and didn’t report in previous years, consider filing an amended return or consulting a CPA specializing in cryptocurrency to get compliant.

How Monely Can Help

Controlling cryptocurrency investments requires organization, especially if you also have stocks, bonds, and other assets in your portfolio. Monely can help you have a consolidated view of your finances and maintain control over how much is allocated to each asset class.

Useful features for crypto investors:

• Separate accounts by investment type: Create a “Cryptocurrencies” account and record purchases/sales separately from the rest of your portfolio
• Financial goal tracking: Set how much you want to invest in crypto (e.g., “5% of net worth”) and monitor progress
• Multi-currency support: Record values in USD or other currencies with automatic conversion at updated rates
• Visual reports: See pie charts showing how much of your net worth is in crypto vs other investments
• Complete history: Record each purchase and sale to facilitate tax reporting
• Payment reminders: Set alerts to remember important crypto-related deadlines

The app doesn’t connect directly to exchanges (for your security), but you can manually record movements in seconds, creating an organized history to consult at tax time.

If you’re building a diversified investment portfolio, Monely helps visualize whether you’re respecting the planned allocation (e.g., 70% fixed income, 25% stocks, 5% crypto) and avoid excessive concentration in risky assets.

Conclusion

Cryptocurrencies are here to stay, but investing without knowledge is the fastest way to lose money. Remember the key points:

• Bitcoin and Ethereum are the most established, with lower relative risk among cryptos
• Use regulated exchanges (Coinbase, Kraken, Gemini, Binance.US)
• Allocate maximum 5% of portfolio to crypto, especially if you’re a beginner
• Understand the risks: extreme volatility, scams, regulatory uncertainty, risk of total loss
• Report to IRS: All crypto transactions must be reported, short-term gains taxed up to 37%, long-term at 0-20%

Before buying any cryptocurrency, make sure you have a solid emergency fund (6 months of expenses), are free of expensive debts (credit cards, payday loans), and already invest in traditional assets like Treasury securities, CDs, or stocks.

Crypto isn’t a lottery, but it’s also not a guaranteed path to wealth. Treat it as part of a long-term strategy, not a short-term bet.

Want to organize all your investments (crypto, stocks, funds) in one place and have clarity about your financial situation? Try Monely and take full control of your investment portfolio.