Utilising PokerTracker4 statistics - Particularly AF and AFq

Hi all,

So i've had a good day today after playing really fishy recently and resorting to the forums. I also upgraded my subscription and have been reading lots of new content.

One thing I wanted to gain some more knowledge on was utilising player statistics. Im currently at the level where I can read and understand VPiP and PFR. I can shape how I approach a hand based on these statistics. I wanted to take this further though and ask you all what further statistics I can use that are useful? I have been reading up on AF and AFq and gather so far that an AF above 2.0 shows that the opponent doesn't like to fold and an AFq above 50.0 shows that they like to raise more than check or fold. I found a really nice webpage explaining all different values and what they mean but I can't find it now also if you could explain a little about WSD that would also be great! What value does this need to be to suggest that a player is more of a calling station for example?

Thanks a lot,
Daniel