Hey Denise--
First of all, I have heard that you should take the version with essay--I've heard that there are some tricky questions on the non-essay version to make up for the lack of essay. I was also told that it's pretty hard to fail the essay portion of the exam as long as you can pick a topic and argue it somewhat coherently.
Secondly, we are coming out with English Comp materials (hopefully within the next two weeks!), so if you have other CLEP exams to take, you may want to consider postponing English for a bit.
Otherwise, if you have no time to wait, then check out our GED Grammar section--it doesn't go as in-depth as you need, but there's definitely some relevant material there.
