Ha Ha why not the standby guide of "Does this feel good?"
I mean really, its not rocket science. Every girl likes different things and you may even find that she doesn't have nipples sensitive enough to enjoy that sort of thing. While at the same time she may love for them to be squeezed. Also some women like them bitten and others just want a very soft suckle or a hard suckle or an in-between suckle!
Again, communication will reap the best results
Best of luck in your relearning of childhood skills!
