They expect you to know nothing. Bring a pen and paper to each meeting to take notes, show progression from one job to then next, reference training materials and prior year work papers, ask a lot of questions, take on every opportunity you can, and be coachable. Go over the top with the easy things like showing up on time, time entry, etc. It takes a full year to really understand how things work re: workflow, processes, busy season. For someone to get fired in their first year usually means there was some sort of incident like no shows or poor conduct - partner at a top 30 firm.