I can advise to read Double Your Dating e-book by David DeAngelo, it is fairly short and sums up the dynamics of male-female relationships. If you have no idea where to start, this is a good place. Here's a link to a learning journal of one of the members, there is a lot of practical advice in there and well written too even though English isn't his mother tongue. It may get you inspired:
from-afc-to-pua-a-learning-journal-afc- ... ght=daniel
Otherwise, you may want to check out the inner game section if you have problems with your confidence. But if you approached that girl at the gym, you have the guts to do anything so don't give up! I hope I get some points for heaven
