Does any of the MGMAT book cover the AWA essays? I tried looking for one but i couldnt find it. Also i took the first CAT exam and skipped over the essay questions because i thought i could go back to it. Any way for me to go back to my AWA essays?

We don't have any books that cover the essays - that's only an in-class lesson (and an associated lab).

You can't go back to the essays after; you can only do them at the appropriate point, which is before the multiple choice portion. Also, don't skip the essays any longer! If you don't get used to the stamina required to write essays for an hour before you can get to the multiple choice, then you'll run out of energy during the real test.