What to do when starting en pointe?

Next week I'm starting pointe, and this weekend I'm getting the shoes and everything, but I don't really know where to start with everything. I've had people tell me that I need to make an appointment and I did, and that I'll need to try on TONS of pairs of shoes, but I'm still really nervous about getting the shoes, and starting and all of that. Any advice about toe pads, tape or anything related to pointe?