This is more or less fine when you have a totally new system with a new interface. You have a lot to learn, but your knowledge will probably be relevant for a very long time, since GNU/Linux generally does not force a new user interface to the users as much as Apple and Microsoft systems do.
Concerning Airpods, they require Bluetooth to function. PureOS is a distribution which does not allow any programs without a source code and freedoms of free software. Technically, Librem 15 has Bluetooth hardware, but a driver for it is non-free, so it does not function. If you do not care too much about it, you can find a non-free firmware, install it and Bluetooth should work.
Tell us more what you tried and perhaps give a link to the software and we can try to help you. For a good documentation for beginners, you can check here: Debian -- Documentation and here: Software - Debian Wiki.