I talked to Jeremy, who is the student success advisor for San Marcos, and he said that your username and password will be sent around mid-January, and you'll have 1 month-ish to do your tuition deposit. If you are accepting you should get the ball rolling however, get your fingerprints and background check and drug test scheduled and done. I've also set up my doctor appointment for the physical and scheduled the class for CPR/AED, First Aid (mine expires in 3 weeks
).
Medical Stuff isn't due until May 1st, so plenty of time to get that TB test up to date and what not. Really at this point just make sure you send in your enrollment agreement, essential functions, and the admissions... thing, which is in the enrollment agreement.
Again, this is San Marcos but I imagine the information is consistent across the board.