Starting the process questions

So my husband and I are TTC for the last year. I'm 31 & he's 36. I have pretty regular periods 28-32 days, with occasional skip month. We are getting ready to begin testing w/ an OBGYN to see if/what issues may be causing the hold up. I'm not sure what to expect, testing wise, what to ask, & how to not be a nervous wreak. Any advice on what to expect or ask would be much appreciated! Good luck everyone!