A few terms that will pop-up regularly in this guide.
Blockchain
An immutable, secure, transparent and decentralised ledger to record transactions. Cardano operates with a blockchain at its core.
Cryptocurrency
A digital currency in which transactions are verified and recorded using cryptography on a decentralised ledger (see blockchain above). ADA is the cryptocurrency of Cardano.
Epoch
In Cardano, time is calculated in Epochs: an Epoch lasts 5 days.
Exchange
A place (generally a website) to purchase cryptocurrencies.