Crypto without the confusion

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.

Dollar-cost averaging versus investing everything at once in bitcoin: what the evidence says, the pros and cons of each approach, and how to choose based on your profile.

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.

Bitcoin explained from scratch: what it is, how the blockchain works, who created it, how new bitcoins are issued and why it has value. A beginner’s guide.

Ethereum explained: what it is, how smart contracts work, what dApps are, what ether is and what Layer 2 means. The programmable blockchain beyond Bitcoin.

Bitcoin and Ethereum compared: purpose, technology, supply, use cases and risks. What sets them apart and which makes more sense for your goals.

A guide to buying Bitcoin for the first time: choose an exchange, verify your identity, buy with card or bank transfer and store your crypto in a safe wallet.