Guys I truly don't mean to spam the community but these are legit questions. Yesterday I posted about linux compatibility and computers and every single person gave me knowledge to use and you're all awesome.
Now my question is, I will undoubtedly be purchasing an older machine, would an older but good running machine still be able to install the latest kernels or versions of distros or are you limited to older versions only, based on the era of your laptop or is it really about the hardware you have? I know ram, disk space, basic stuff like that matters with distros, but I know that will not be a problem. I guess I'm thinking beyond that like processors. are older processors or anything else hold certain machines from being compatible with the newest and greatest kernels? Thanks!
So then there's really nothing special you look out for? why have I had such issues with linux issues and my Dell Xps 13 9310? user error or proprietary b.s.?
Proprietary BS, Dell has become kinda notorious for that. A lot of their stuff has weird hacky workarounds to get Linux running properly. Unfortunately there isn't a great way to know that in advance, other than poking through wikis or asking around.
For most computers, it really isn't much different than installing Windows. Most things will just work, maybe a few drivers to install, and you're good to go.
Business or consumer? I've heard much better things about business class laptops for whatever reason
Both, but consumer is generally worse. For reference, check here for issues related to yours. The instructions are geared toward Arch, but the problems affect most distros.