whats the best hbm aa-ad bases and what heroes would be ideal for it?
Mileage will vary from person to person but...
PD, Val, GH + DD, Vlad, Molt, Arc, GF, GS, Anubis, Aries, PK, and HB. For an easy time, get as much scatter as possible.
As for a base, I recommend going to YouTube. All the videos work for the most part. Corner base, side base, it's all basically the same thing.