the best we've got are official documentaion(which is currently incomplete) & forums like these.
I'm grateful for all the help i've gotten from the community so far, especially from @william_harley
i've followed maxrose's awesome tutorial on 'look at'. in that, he uses 'rig attrib vop' with apex.....i've used simple skeleton instead of procedural and followed it many times.
my rig just doesn't work. its okay. i'm an idiot and doesn't know where the issue is lol lol..

can somebody explain via a hip file:
how to setup 'look at' ENTIRELY in apex, in simplest way possible?
simplest and dumbest setup i can think of is kinda like this:
2 kinefx joints for 2 eyes + additional joints for 'look at'.
hope somebody helps. Thanks...