I switched over 30 years ago and the trick is to buy hardware with Linux in mind. Linux tries to work with as much hardware as possible but it does so with mixed results. If you buy well supported hardware it becomes much easier. Finding out which hardware is best supported is really the main problem. Probably the easiest way to solve this is to buy from a Linux native vendor. System76 is probably the best known (to me anyways) but there are others.