I will be starting Power School at some point in the near future and am looking for some advice on things I can start doing now to prepare myself. I already know that it will be long hours, hard work, lots of studying, and almost certainly mandatory hours, but am looking for anything else. There's a lot of info here for the Enlisted side, but looking specifically for Officer.
Are you asking about this:
https://www.navsea.navy.mil/Home/NNPTC/powerschool.aspx ?
If so, you are in the wrong place. The PowerSchool this board refers to is a Student Information System used by school districts.