Welcome to the crypto community. I do not know if it was a mistake but you shouldn't refer to Coinbase as a wallet. Yes it's somewhat secure and you have a loose insurance backing but anything online can be hacked. Also keep in mind they will only back your money if they get hacked on their end. I recommend a true wallet like Trezor and Ledger or any of the others that are on the market. You can even make cold storage paper wallets which I'm sure you know of. A non-issue but since you're somewhat "new" I thought I bring it up. Great article nonetheless.