Gonna put in my two cents. People who are having trouble should just do the level 80 job quest and then after that experiment on a training dummy.

I did the exact same thing, it doesn't matter if it takes a while to learn the job because that is part of the fun.

Just relax and put your job actions on your cross bar or keybinds that feel comfortable to you.

Also the positional part is super easy, just remember if you get the Hunter's Instinct buff go flank and if you get Swift go rear.

Easy way to remember I heard is to give them a swift kick in the butt and the other positional would be the opposite.