Out of everything this program does and I need a tutorial video in order to figure out how to close a window? Absolutely ridiculous amounts of incompetents or stupidity here. I don't even want to use this program anymore if I'm going to run into counter intuitive bullshit like this. Get your priorities in order.
eh, calm down please...
[using words ridiculous, incompetent, stupidity, bullshit in your very first appearance doesnt really help bulding up a fruitful relationship...]
this place is for reporting bugs, for advice on how to use blender you are better of asking at
If you are talking about splitting/joining areas, you could have had a look at the manual (simple as that) here https://docs.blender.org/manual/en/dev/interface/window_system/areas.html
but since it seems you've made a decision to not use blender anymore already...