Bitcoin simplified:

- get a free bitcoin wallet. Breez or PhoenixWallet are good
- use receive to get bitcoin. You get either a qr code that can be scanned with another wallet, or a text string that you can share however you want (if you are not in person)
- use "send" to send. Scan qr code or paste the string
- create a backup of your bitcoin. There's a backup option in the wallet
- the exchange rate will change, it's similar to having any other foreign currency. You can type amounts in your own currency and it will get converted by the wallet.
- accepting bitcoin in your business is the same. Click receive, type amount in your common currency, show the qr code to the customer.

Enjoy your new financial sovereignty!