I hear you but this is how I have learn to run and like linux. I
build computers and am not good with software part. The only way to
learn is to get busy.
I do run 21 on my PC but I use my laptop to learn how to run the
next release.
In my opinion you're going about this the wrong way (walk before you try to run). But it's your decision. Just kindly direct your questions to the Test list, which is the appropriate place for them.