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Twenty reference guides, written from primary sources and updated with 2026 data.
Basics
Security
Custodial vs non-custodial wallets: who actually holds your keys
The precise technical difference, what happened at Mt. Gox, FTX and Celsius, the $713M stolen from personal wallets in 2025, and what MiCA really protects.
13 min · updated 28 August 2026How to choose a hardware wallet: the criteria that actually matter
Secure elements, open firmware, passphrases and threat models. Fifteen models compared with August 2026 prices, plus what really happened in Ledger's four incidents.
15 min · updated 28 August 2026How to choose an exchange: licences, fees and the small print
In the EU the number one criterion is no longer the fee, it is the MiCA licence. Public registers, the Binance case, the spread trap and the real cost of buying €1,000.
14 min · updated 28 August 2026The most common crypto scams in 2026 and how to spot them
Pig butchering, drainers, address poisoning and fake support explained from the inside, with the Chainalysis and FBI numbers and what to do if you have already been hit.
15 min · updated 28 August 2026Technology
Gas fees: why you pay what you pay, and how to pay less
How Ethereum gas is calculated after EIP-1559, why a swap costs $0.131 in August 2026, and which tactics genuinely cut your bill.
11 min · updated 28 August 2026What a DAO Is and Why Almost None of Them Are Truly Autonomous
How a DAO really works: quorum, timelock, emergency multisig, mass voter apathy, flash-loan governance attacks and the unresolved legal question of member liability.
12 min · updated 28 August 2026What a Layer 2 is, and what risks it adds
How optimistic and zk rollups work, what EIP-4844 changed, and what the Polygon zkEVM shutdown on 3 July 2026 teaches everyone using an L2.
11 min · updated 28 August 2026What a smart contract is (and why it is not a contract)
How code running on the EVM actually works, why almost no contract is truly immutable, and what to check before you sign a transaction.
12 min · updated 28 August 2026Bitcoin mining: how it works and why home mining no longer pays
What a miner actually does, how difficulty readjusts every 2,016 blocks, and an honest calculation of what an ASIC earns as of August 2026.
12 min · updated 28 August 2026Investing
Crypto Trading: The Concepts You Need Before Your First Order
Order books, slippage, order types, maker and taker, leverage and liquidation, with real 2026 fee schedules and the true annual cost of trading every day.
12 min · updated 28 August 2026Crypto Airdrops: How They Work and Where the Trap Is
What a project gains by giving tokens away, what farming an airdrop really costs at 2026 gas prices, and why the token that appears in your wallet on its own is bait.
11 min · updated 28 August 2026What an ICO Is and What Is Left of Them in 2026
How ICOs worked, what they turned into, and the terms that decide whether a token sale hurts you: FDV, cliff, vesting and the unlock schedule.
11 min · updated 28 August 2026What DeFi Is: How It Works Under the Hood and the Risks You Take On
How AMMs, over-collateralised lending and liquid staking actually work, with worked numbers for impermanent loss and liquidation, August 2026 TVL data and the risks that stack up.
13 min · updated 28 August 2026What Staking Is, What It Pays and What Can Go Wrong
How Ethereum staking actually works: the 32 ETH minimum, the 2.67% APR of August 2026, the entry and exit queues, slashing, and the four ways to do it.
12 min · updated 28 August 2026