Doc,
Once you are finally accepted, you'll be given a list of things to memorize. These Big Four are the general orders of the sentry, the code of conduct, the chain of command, and the rank structure of the Navy and the Marine Corps. I'm working through it slowly; it's not that difficult. I've now told you everything I KNOW about OCS. Probably a lot of stuff you'll hear on this site will be speculation or half-truths. My recruiter did tell me the other day that PT at OCS seems to be particularly intense right now. He said that his folks who have gone down there have found their pain to be inversely related to their preparation. It can get pretty hot in Ohio during the summer, so I'm not overly worried about the thrill of running during a Florida Panhandle summer. Good luck with getting your packaged wrapped up.