Your time off after indoc will depend on how backed up the sim is. You should know your schedule when you show up on day one. There are contractual requirements for days off after completion of sim training.

As for what to study before indoc I would say nothing. Just show up with a willingness to work and learn. They will teach you what you need to know. Do yourself a favor, don't be the guy/gal that starts every statement with, "This one time when I was flying xyz at abc airline/company..." Your past experiences are valuable and will help you and your fellow crew members out at some point. You don't have to prove you have what it takes, you have already been hired.

Best of luck to all whatever stage of the process you are at.