Why Does Masturbation Feel Weird?

I'm 16 years old and a virgin and I'm not exactly sure how to masturbate? That might sound weird but I'm just not sure how I'm supposed to do it. I've tried fingering myself but it always kind of freaks me out and I stop and it never felt that good anyway. The thought of my fingers being inside myself just weirds me out, even though I know it's not weird but it is for me....

Is liking how the anus smells perverted?

Delicate matter. My boyfriend and I both enjoy anal sex - that isn't the problem. He also tells me that he likes the smell of my anus (I should point out that this is after I've bathed - nothing to do with feces). When I masturbate I too like the scent of my anus but to hear him say it made me feel embarrassed....