No single cryptocurrency is right for every investor, and the choice depends on your risk tolerance, time horizon, and what you're trying to accomplish
Cryptocurrency is volatile. Bitcoin has swung from under $20,000 to over $60,000 in a single year. Ethereum, the second-largest by market value, has experienced similar swings. Before you pick any specific coin, you need to understand that you could lose most or all of your money. That is not a worst-case scenario — it is a real possibility that happens to real investors regularly.
If you are new to cryptocurrency, the most common starting point is Bitcoin or Ethereum, simply because they have the longest track records, the largest user bases, and the most liquidity (meaning you can buy and sell them easily). Bitcoin is the oldest and most established; Ethereum is a platform that lets developers build applications on top of it. Neither is a sure thing, but both have survived longer than most alternatives.
Beyond those two, the field expands dramatically. There are thousands of cryptocurrencies, each with a different purpose, development team, and level of adoption. Some are designed for payments, some for smart contracts, some for privacy, some for gaming. Many will fail. Some will succeed. Picking the winners in advance is extremely difficult, even for professional investors.
Key Takeaways
- Bitcoin and Ethereum are the oldest and most established cryptocurrencies, and they are where most beginners start because they have the most liquidity and the longest operating history.
- Cryptocurrency is highly volatile and you can lose your entire investment, so only invest money you can afford to lose completely.
- Smaller or newer cryptocurrencies carry higher risk than Bitcoin or Ethereum, and many will fail or become worthless.
- Your choice should depend on your understanding of what the cryptocurrency does, your risk tolerance, and how long you plan to hold it.
- Diversification across multiple cryptocurrencies can reduce risk, but it also requires more research and monitoring than holding one or two.
What Bitcoin and Ethereum actually do
Bitcoin is a peer-to-peer payment system and a store of value. You can send it to someone else without a bank or payment processor in the middle. It has a fixed supply — only 21 million Bitcoin will ever exist — which is why some investors see it as digital gold. It does not do much else. It is not a platform for building other applications.
Ethereum is a platform for running applications. Developers write code that runs on the Ethereum network, and users pay fees (called gas) to run that code. Those applications range from financial services to games to digital art. Ethereum's supply is not fixed, so it does not have the same scarcity argument as Bitcoin. The value of Ethereum depends partly on how much people use the applications built on top of it.
Both have real costs to operate. Bitcoin requires miners to solve complex math problems to secure the network, and they are paid in newly created Bitcoin. Ethereum historically worked the same way, but switched to a different system in 2022 that uses far less electricity. Both networks have been running continuously for over a decade without major outages or security breaches.
How to evaluate other cryptocurrencies
If you are considering a cryptocurrency beyond Bitcoin or Ethereum, ask yourself: What problem does it solve that Bitcoin or Ethereum does not? If you cannot answer that question clearly, that is a red flag. Many cryptocurrencies exist because their creators wanted to raise money, not because they fill a genuine gap.
Look at who is actually using it. A cryptocurrency with a real user base — people transacting regularly, developers building on it, merchants accepting it — has a better chance of surviving than one that exists only as a speculative asset. You can see transaction volume and active addresses on blockchain explorers, which are public websites that show all activity on a cryptocurrency network.
Understand the team behind it. Who created it? Do they have a track record in technology or finance? Are they still actively developing it, or did they disappear after the initial launch? Do they have a clear roadmap for what comes next? A strong team is not a may provide, but a weak or absent one is a warning sign.
Be skeptical of promises. If someone is telling you that a cryptocurrency will make you rich, or that it is may provide to go up, or that it is the next Bitcoin, they are either lying or they do not understand what they are talking about. Legitimate projects make claims about what they are building, not promises about price.
Risk and diversification
Cryptocurrency is a high-risk asset class. Even Bitcoin and Ethereum, the most established cryptocurrencies, can fall 50% or more in a year. Smaller cryptocurrencies can fall 90% or disappear entirely. If you cannot afford to lose the money, do not invest it in cryptocurrency.
Some investors hold only Bitcoin or Ethereum. Others spread their investment across five or ten different cryptocurrencies to reduce the risk that any single one fails. Diversification can help, but it also requires more research — you need to understand each cryptocurrency you hold, not just one.
A common approach for beginners is to start with Bitcoin and Ethereum only, learn how cryptocurrency works, and then decide whether to explore other options. This keeps your research manageable while you build experience. You can always add other cryptocurrencies later if you decide to.
Where to buy and how to store it
You buy cryptocurrency on an exchange — a website or app where you can trade regular currency for crypto. Major exchanges include Coinbase, Kraken, and Gemini. Smaller exchanges exist, but they carry higher risk of hacking or collapse. Choose an exchange that is regulated in your country and has a track record of security.
Once you own cryptocurrency, you need to store it. You can leave it on the exchange where you bought it, which is convenient but means the exchange holds your private keys — the passwords that prove you own the cryptocurrency. If the exchange is hacked or goes out of business, your cryptocurrency could be lost.
Alternatively, you can move it to a wallet, which is software or hardware that you control. A hardware wallet is a physical device, like a USB drive, that stores your private keys offline. It is more secure but less convenient. Most beginners start by leaving cryptocurrency on an exchange, then move to a wallet as their holdings grow.
Tax and regulatory considerations
In most countries, buying and selling cryptocurrency is a taxable event. If you buy Bitcoin at $30,000 and sell it at $50,000, you owe tax on the $20,000 gain. The tax rate depends on how long you held it and your country's rules. Keep records of every transaction — when you bought, when you sold, the price, and the amount.
Cryptocurrency regulation is still evolving. Some countries have clear rules; others are still deciding how to treat it. Some have banned it entirely. Before you invest, understand the legal status of cryptocurrency in your country and whether there are any restrictions on what you can do with it.
If you are using cryptocurrency to send money internationally or to hide assets, you should know that most countries are cracking down on this. Tax authorities and financial regulators are getting better at tracking cryptocurrency transactions. Assume that your activity is visible and that you will owe tax on any gains.
Common mistakes to avoid
Do not invest based on hype or social media. If everyone on Twitter is talking about a cryptocurrency, that is often a sign that the price has already risen and is about to fall. The people making the most noise are often the ones who bought early and are trying to get others to buy so they can sell at a higher price.
Do not use leverage or margin. Some exchanges let you borrow money to buy more cryptocurrency than you can afford. This amplifies both gains and losses. If the price falls, you can lose more than you invested. Beginners should never use leverage.
Do not panic sell or panic buy. Cryptocurrency prices move fast, and it is easy to make emotional decisions. If the price drops 30%, your instinct might be to sell and cut your losses. If the price rises 50%, your instinct might be to buy more. Both of these decisions often turn out badly. Set a plan before you invest and stick to it.
Frequently Asked Questions
Should I invest in Bitcoin or Ethereum?
Both are reasonable starting points if you want to invest in cryptocurrency. Bitcoin is older and more established; Ethereum is a platform with more potential uses. Most investors who are new to cryptocurrency start with one or both of these rather than trying to pick smaller coins. Neither is a sure investment, but both have survived longer than most alternatives.
What is the difference between a coin and a token?
A coin has its own blockchain — Bitcoin and Ethereum are coins. A token runs on top of an existing blockchain, usually Ethereum. Tokens are easier to create, so there are thousands of them. Most tokens are less established than coins and carry higher risk.
Can I get rich quick with cryptocurrency?
Some people have made large returns on cryptocurrency investments, but many have lost money. Cryptocurrency is volatile and unpredictable. If someone is promising you quick riches, they are either lying or trying to sell you something. Treat any cryptocurrency investment as money you might lose entirely.
Is cryptocurrency a scam?
Cryptocurrency itself is not a scam, but scams using cryptocurrency are common. Fake coins, pump-and-dump schemes, and outright theft happen regularly. Bitcoin and Ethereum are legitimate, but many smaller cryptocurrencies are created specifically to defraud investors. Research anything you invest in and be skeptical of promises.
How much should I invest in cryptocurrency?
Only invest money you can afford to lose completely. Many financial advisors suggest limiting cryptocurrency to a small percentage of your overall portfolio — 5% or less for most investors. If you are new to investing, start smaller and learn as you go.