I've just caught up to the current issue of MTMTE but I'm left with lots of questions. Basically I'm wondering about all the things that get referenced that have happened before issue 1.

I've looked on tfwiki to see whats in the IDW G1 continuity but I'm trying not to read to much to avoid spoilers. So do I need to read all the "ations", All Hail Megatron, Ongoing, and the one-offs and miniseries to get the story or do some of these not contribute to the universe that MTMTE is in?