will you be able to go back to skipped questions?
yes, you can mark them.
will you get your score right away?
no, it still has to be heavily standardized. the mcat is figured out in a statistically different way than the GRE.
one thing to keep in mind: The essay section will be interesting since some people can type a lot faster than others.
my friend took a computerzied version of the MCAT because she had to take it while she was abroad in Germany. So I kind of know how it works. she said it was way more convineint than the paper version because you can mark questions and then go back to just the ones that were marked.
oh yeah, will the question level of difficulty increase dependent on whether you got the previous ones correct?
no, thats just the way the mcat works. the versions are written prior to each examination.