Understand first. Decide later.
Clear guides, no jargon: what it is, how to buy, how to store it and how not to lose it.
What it is, how it works, halving, mining.
Smart contracts, staking, gas fees.
How to buy step by step and choose an exchange.
Wallets, scams, fund recovery.
What a stablecoin is, how it keeps its peg to the dollar, the main types (fiat-backed, crypto-backed, algorithmic), how MiCA reshaped the European market, and how to pick a reliable one.
Red flags for rug pulls, pig butchering, fake airdrops, and phishing in crypto. Free tools and security habits that protect your money when there is no undo button.
A practical guide to declaring crypto on your Spanish tax return in 2026: savings-bracket rates from 19% to 30%, Forms 100, 714 and 721, swaps, staking, and how to prepare your records.
What a block explorer is, how to read a transaction on Etherscan or mempool.space, understand confirmations, gas and addresses, and use the explorer to catch scams.
Bitcoin and Ethereum are the two most adopted cryptocurrencies in the world: two networks with different goals and risks. But most content out there is confusing, technical or outright promotional. Here we explain concepts from scratch, with examples and without selling you anything.
Bitcoin is decentralized digital money: no bank or government issues it, and anyone can send or receive it without permission. Only 21 million will ever exist.
Ethereum is a network of decentralized applications where smart contracts run. Its cryptocurrency, ether (ETH), is used to pay network fees.
Cryptocurrencies are highly volatile assets: they can rise a lot and fall more than 50%. Only invest money you can afford to lose and store your keys securely.
Not necessarily: an exchange can hold what you buy. A self-custody wallet gives you control of your keys, but also responsibility for their security and recovery.
Want to learn more? Explore the step-by-step guides.
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