i have a couple questions...

1) how long after the 5th semester does one have to study for the USMLE1
2) how often is the USMLE1 offered in a year? (i hope its not like the MCAT!)
3) is there a particular time to start clinicals?
4) when is the best time to do USMLE2 (both parts)...what is the difference between both of them?
5) is it possible to do USMLE3 before starting residency or would one not be properly trained at that point?
6) how much do these exams cost?
7) is there prep classes (as in kaplan) for all the steps?
8) do people often fail the USMLEs on the first shot?
9) what is the longest break i will have once i commence medschool?
10) for some reason i feel like i should ask a 10th question...hmmm...ok i cannot think of anymore questions that have been boggling me for awhile now...

any answers would be appreciated! thanks!!!!