These are the errors we see over and over again from new crypto users. Every single one is avoidable.
Published: March 2026Buying crypto for the first time is simpler than most people think. But small mistakes in the first few minutes of setting up your account can cost you money for years. Here are the seven most common ones — and how to avoid each.
This is the most expensive mistake on the list because it compounds over time. Exchange referral codes give you a permanent fee discount — typically 20% off every trade. The code must be entered during account registration. Once your account exists, the discount window is closed forever.
Most beginners either do not know referral codes exist or forget to enter one during signup. That means they overpay on every single trade for the entire life of their account.
Fix: Use code MGBABA on Binance or BUYSTOCK on OKX. Both give 20% off for life. Enter it in the "referral code" or "invitation code" field during registration.
A market order buys at whatever the current price is. This sounds convenient, but during volatile moments the price can move between the time you click "buy" and the order fills. This slippage can cost 0.5-2% on top of your trading fee.
Limit orders let you set the exact price you are willing to pay. The order sits on the book and only executes at your price or better. You also pay lower fees (maker fee vs. taker fee).
Fix: Always use limit orders. Set your price slightly above the current market price if you want fast execution, but never use "market buy" for significant amounts.
Some users create their account, deposit money, and start trading without ever setting up 2FA. This means anyone who guesses or phishes your password has full access to your funds.
In crypto, there is no bank to call for a chargeback. If someone drains your account, the money is gone permanently.
Fix: Enable 2FA immediately after creating your account. Use Google Authenticator or Authy — not SMS, which is vulnerable to SIM-swap attacks.
Card purchases are instant, which makes them tempting. But exchanges charge 1-3% extra for card transactions. If you buy $1,000 of Bitcoin with a card, you might pay $20-30 in card fees alone — on top of trading fees.
Fix: Use bank transfer (free or near-free) or P2P trading. Yes, it takes a bit longer, but the savings are significant, especially for larger amounts.
Crypto can drop 50-80% during bear markets. Bitcoin itself has done this multiple times. If you invest your rent money or emergency savings, a downturn can become a financial crisis.
Fix: Only invest discretionary money — funds you would not miss if they disappeared entirely. Start with $50-100 to learn the mechanics before scaling up.
Social media is full of people promoting low-cap tokens that "will 100x." In reality, the vast majority of these are pump-and-dump schemes where early holders sell into the hype, leaving latecomers with worthless tokens.
Fix: Stick to established cryptocurrencies (BTC, ETH, USDT, SOL) when you are starting out. Once you understand market dynamics, you can explore smaller projects with money you specifically set aside for higher-risk bets.
When withdrawing USDT from an exchange, you need to choose a blockchain network (Ethereum, Tron, Solana, etc.). Sending tokens to a wallet that does not support that specific network means your funds can be lost permanently.
Fix: Always double-check that the receiving wallet supports the exact network you are sending on. When in doubt, use Tron (TRC-20) for USDT — it is universally supported and has low fees.
Avoiding these seven mistakes puts you ahead of most new crypto users. The most impactful step is the first one: sign up with a referral code so you save money from day one.
Back to our complete beginner's guide →
Not using a referral code at signup. Codes like MGBABA (Binance) or BUYSTOCK (OKX) give a permanent 20% fee discount that cannot be added after registration.
Enable 2FA with an authenticator app immediately. Use a unique strong password. Never share 2FA codes or seed phrases. For large holdings, use a hardware wallet.
Limit orders are almost always better. They give you exact price control, avoid slippage, and cost less in fees.
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