Welcome to the forums Yuka85.
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-
-Use this spreadsheet for any enhance calculations you wish to perform before using feeders-
-This is a list of cards with pictures and stats for comparison-
-And of course there is a wiki for everything-
Unofficial Fantasica Wiki
I hope this helps.