You don’t need to know any of the technical details to use Bitcoin, just as you don’t need to know what happens under the hood when you send an email.
All you need is to download a wallet to your phone or computer, and a Bitcoin address will be created for you. Once there, you can purchase your first bitcoins and have the world of cryptocurrency available to you.
Want to pay for coffee, send them to an exchange for trading, or simply HODL? It’s up to you.