I'm gonna make this simple- Anal: enjoyable or not?

I've been wanting to try anal for a while. A lot of girls say it's better than sex and while most don't agree it can still be good. But I have a few questions- A) why does it feel good? I've never had any orgasm expect from clitoris stimulation so I don't understand how you would feel sexual about that. B) how do you do it? Obviously with lots of lube but I mean where do you even put the lube? And my BF doesn't want to wear a condom- is that a necessity? C) what's the best way to go about it in terms of pace and position and first time and stuff?