Always check the guide.
As long as the video's content moves along with the same guide, then the visual representation is all good. Use at your own risk, of course.
There's always a slight risk of bricking.
Do note that NTRboot is the method that users perform to get out of bricking, so keep your nands safe, may be useful for this method, in the unlikely chance you brick..
okay that's good
Install CFW first. Once CFW is installed, and you exported your save, you can use PKHeX.
Don't get ahead of yourself.
IKR!
No worries. At least you made another post, so I could split them here.
Check the subheading and descriptions in our forums, that'll probably help you come to a decision on where to post :3