I know I'm posting a bit late,
but I know what you mean and my top tip would be get an old Mac,
because you can still do your pc stuff like word processing, video editing, etc,
but it sucks at gaming and YouTube and all the useless sites like instagram etc.
I would recommend a 2006 Mac Pro if your a PC guy.
It's a lot like a pc you can upgrade it if that's your thing,
and for older Pro apps it's a very powerful machine
And run MacOS X 10.6 snow leopard on it because that is a rock solid OS