As I'm sure some of you know, I have had very little exposure to comics or their workings until I joined CV about 2 months ago. Since joining my knowledge of the characters featuring in the comics and films has increased but not of the actual comics. I know have 4 comics, however only one makes sense as a stand-alone book. (I have Fear Itself, Platinum Thor, Thor Ultimate Collection and The Mighty Thor #1) So I just wanted to know like how regularly are comics released? Do they have one cumulative graphic novel of a whole series e.g. mighty thor or would you have to buy all of them indivually? Also any online sites do buy them from?

Many Thanks

Thunderer