AD, AFR, and ANG all have to take the CBT course. It's 34 modules, it's not hard with a beer a few nights a week. There is an accompanying notetaker that is like 90 pages of worksheets. I did most of it. I haven't looked at it since. For the last two classes, the test on pre-reqs was somewhat diagnostic, it didn't count and it was to see how effective the pre-reqs were online and at home as opposed to spending more time on them at OTS.
The facebook groups are full of non-flyers, lots of priors making the jump to the O-side of the field they were enlisted in previously, or cross training. That being said, they treat this training like grad school, or like the big turning point in their careers - and have family pressures and stuff depending on it. They have a different mindset then somebody like me who just graduated college in June and this is really more of a grow up quick and slog through it as a stepping stone to UPT. So keep that in mind when looking through the facebook groups, they're full of people stressing over what towels to bring, talking about how happy they are to have memorized the dining facility procedures 6 weeks ahead of time, and lamenting about not being able to go on runs with their dog.
My main advice is get organized - buy a little file box and organized all of your paperwork, medical stuff, orders, vouchers. And for gods sakes run 2-3 times a week and do push ups and sit ups.
I leave on Sunday. Feel free to PM me in a couple weeks for some inside info.
:-)