Welcome to the forums Yoyogavinyeo.I believe it is 25 posts before PM is unlocked
Here are some links that may come in handy:
-First thing to do is read the forum rules-
Forum Policies and Information
-This thread has answers to many questions-
FAQ Thread
-Use this spreadsheet for any enhance calculations you wish to perform before using feeders-
Enhancing Spreadsheet
-This is a list of cards with pictures and stats for comparison-
Fantasica Encyclopedia
-And of course there is a wiki for everything-
Unofficial Fantasica Wiki
I hope this helps.