There are thousands of websites dealing with Crypto currencies. Here are some of the more useful ones.
Binance's Glossary of Crypto Terms - https://academy.binance.com/en/glossary
An excellent, up-to-date glossary of all the terms for Crypto.
CoinGecko - https://www.coingecko.com/en
Up to the minute crypto prices for the top 100 crypto, with trends (1 hour, 24 hour, 7 day), 24 hour volume of transfers, market cap, and last 7 days graph.
BlockChain - https://www.blockchain.com
Wallet, Exchange services, and blockchain explorer.
- Wallet for holding your crypto online.
- Exchange to buy & sell crypto (although I use Binance).
- The Explorer allows you to enter any address and see the balance and history of that address.
EtherScan - https://etherscan.io/
"The Ethereum Blockchain Explorer". Very similar to Blockchain allowing you to explore the Ethereum blockchain.
Real Vision - https://www.realvision.com/crypto
Free online video channel for everything Crypto