AZNBoyNYC

1. You need to take the daily PreP for about 2 weeks before unprotected sex to provide adequate protection. You need to continue the PreP for at least 2 more weeks to be on the safer side provided you do not have unprotected sex after the first encounter. There is a new kind of PreP that requires only an injection every 2 months and they claim to have better protection. However, you need to get your insurance approve for it which can be tricky for some plan.
2. PEP is only for exposure with high risk (being bottom and unprotected), the side effects can be quite bad and you need to continue the completion course of the PEP which is a few weeks. If you already take PreP, the doc at emergency department will not recommend you do PEP.
3. PreP currently has 3 options: For daily pills you will have Truvada or Descovy (or their generic versions). Descovy is newer and is claimed to have less side effects and impact to liver, however it is also more expensive as there is no generic version yet. Most insurance plan will approve Descovy if you doc submit a request. For injection, the brand is Aperture, it is very expensive and most insurance plan only approve it if you are high risk (have multiple unprotected partners etc) but it only needs 1 injection monthly for first 2 times and then 1 injection every 2 months after that. The major side effect for the injection is pain at injection site but many feel it is much better trade off than taking a pill daily. 

I prefer at least one face pic, although I understand why some providers might not want to post one, and I can live without it. Beyond that, 10 or 12 pics are adequate, as long as all the "important" details are covered, or rather, not covered, so I can see and assess the goods. 
Three things I don't understand about the pics some providers provide:
Giving us the finger - what an absolutely infantile and off-putting gesture. Saying he has a large endowment in an add with 73 pics, not one of which shows a d**k. Including 73 pics in an add (or some similarly excessive number). I've never had occasion to reflect, I was really not sure about hiring this guy, then I saw Pic 72. Wow! That sealed the deal. At some point, that many pics just gets tiresome, especially if 28 of them are essentially the same pose.