I'm completely new to this

Yisel
I'm still trying to figure out the whole ovulation thing and CM... When is the best time to check your CM and what does it mean if you feel it "wet" but see nothing? Also what does day 14 and 16 mean and how do you know when you have reached those days? I'm hearing that those days after your period are suppose to be your most fertile. How often should you BD after your AF is over? Please help!!!! Lol