1: congratz for having the guts to do it.
I live in Romania, where people are 50 years back, so think of my reactions.
Happily, I don't give a **** about what the one on the left or sight side says about me, they can not feel the smoothness of my head, they can not enjoy the real freedom. My GF really loves the look on me, so it's enugh.
about your questions:
1: I didn't lost my hair at all. I am BBC (Bald By Choice). That makes me special:D
2: About cutting myself....uwm. today, thursday, october 27th, I turned 2 weeks since I shaved it. Swear to fake got I never cut myself like big time. All I got was 3 scratches at all. I can even play with the blade, without a mirror, and it feels allright

3: I use a Gillette blue 3, and I get a new "headrazor" every 3 days. so, I use one for 3 days. 1=1$.
I shave it every day, though

4: I can not answer that, I don't use an aftershave, though. I only use some cheap aloe vera cream, which makes me feel very fresh and ok:D
one question: How often you shave it?
Aw, and welcome to SBG