The Energon Pub

I think I'm a little lost.

I have been purchasing the TPBs of the TF ongoing as they come out. I just finished volume 6, and I am looking for 7. But it seems like it's not as simple as waiting for volume 7. How do these story lines (RID, MTMTE, Infestation) fit together, or are they exclusive from one another?

In short, where do I go after the end of volume 6?

Go easy on me, I'm old.

Thanks.

This is oder they ahve been published
http://tfwiki.net/wiki/IDW_Publishing

Or if you are hardcore you could look at this
http://tfwiki.net/wiki/IDW_timeline

Infestation (1) is kind of a wild card, you can read the others without it (well, at least I don't remember anything from it).

Infestation 2 is happening in the Hearts of Steel universe, which is separated from the main IDWverse.

RiD-MTMTE: You should read the Death of Optimus Prime one-shot first, then MTMTE 1 (since RiD 1 is following some happenings from it), and after that you're free to read the rest in any order.