Blockchain & Crypto: Understand Coins, Exchanges, and Staking in 2025

When you hear Blockchain, a decentralized digital ledger that records transactions across many computers so that any involved record cannot be altered retroactively. Also known as distributed ledger technology, it's the foundation behind every crypto coin, smart contract, and DeFi app you use today. It’s not magic—it’s code, math, and incentives working together. And if you’re trying to make sense of crypto, you need to start here.

Crypto exchanges, platforms where you buy, sell, or trade digital assets like Bitcoin and Ethereum. Also known as cryptocurrency trading platforms, they’re your gateway into the market. But not all are built the same. Some, like Bit2Me, are regulated in Europe, let you start with just €1, and even teach you as you go. Others ignore beginners entirely. Knowing the difference saves you from fees, scams, and locked funds.

DeFi lending, a system where you lend your crypto to others and earn interest without a bank. Also known as decentralized finance lending, it runs on smart contracts—no middlemen, no paperwork. Platforms like Aave and Compound let you earn yield, but they also carry risks. If you don’t understand how they work, you might lose more than you gain.

Then there’s staking rewards, the earnings you get for helping secure a blockchain network by locking up your coins. Also known as proof-of-stake rewards, this is how Ethereum and many others keep running. It sounds simple—lock your ETH, get paid. But the math behind APY, MEV, and tax implications? That’s where most people get tripped up.

What you’ll find here

You won’t find vague hype or recycled news. You’ll find real breakdowns: how Bit2Me compares to other EU exchanges, why DCA might be better than lump sum for your mental health, how to actually calculate your staking returns, and which DeFi platforms are still safe in 2025. These aren’t theory pieces—they’re guides written for people who want to use crypto, not just talk about it.

Whether you’re just starting out or trying to optimize what you already do, this collection cuts through the noise. No jargon. No fluff. Just what works, what doesn’t, and why.