Interesting topic. Let start by saying I started playing with analog computers in 1965, migrated to digital around 1970 and have more or less been up to my ears in computers ever since. A few things I've learned the hard way ..
1 - never buy the first version of anything, let other people do the beta testing.
2 - never install software upgrades until they've been well tested by other user's.
3 - if it ain't broke - don't screw with it.
4 - take a grain of salt with all manufacture sales hype.
5 - find a few discussion forums where "working" IT guys discuss their computer problems and solutions.
My notebook, a 32 bit with XP Pro finally crapped out last week thus forcing a total upgrade. I looked at the zillion Win 8 and 8.1 machines, read the forums and discovered my only option was to find a Win 7 machine or buy what ever and upgrade it to Win 10. Since waiting for Win 10 breaks rule #1, I found a "business" class Asus notebook that is factory loaded with Win 7 Pro and offers a free copy of Win 8. The Win 8 discs went to the land fill couple days ago.