So I graduated with my BA in 2010, and my mom bought me a strong hint that I should pursue a mastery in something. I finally decided on that something. A Mastery in Public Health is similar enough to my current job, which I enjoy and feel very strongly about.

I currently only have the 2011 Kaplan GRE Premier book to study from. I scheduled my test for May, giving myself approximately 2 months to fully prepare. I think I can get through this text in one week, possibly less, possibly more, because I also have a huge project that I'm assisting with preparations for and I'm pulling lots of overtime for work. Which is nice, but exhausting.

Can someone clarify this one thing for me? 2011 was when they changed the test's format, so everything in the book was theoretical.

Can you mark an answer and go back on the computer-based test? Or skip and go back, or finish and, time willing, go back to review/verify?

Or will it be the, "make your choice and forever hold you peace" type of deal?