I think I found the best guide out there so far.
It’s Yes’s guides on elitist jerks. So apparently he is quite a good player… and he used to play on my bg (Ruin). I never played him, but I was watching the blizzcon stream and someone said that he plays a druid now. Anyway, the blog is a little bit old but it’s awesome. It doesn’t have stuff on all classes, only on mages and on druids, but the keyboard layout thingies are so cool! I don’t know how he made them let me show you guys an example
So as you can see here the best way to position your hand is like that. I really like the F key because it makes my hand rest comfortably on the spacebar and use up less movement to press the keys. I put intercept on f as warrior and blind on f as rogue.
Check out the guide here: It’s awesome.