Who taught you how to swim, and at what age?
My mother, I guess. I'm not sure what age.

Who taught you how to ride a bike, and at what age?
Ahahaha, I still can't. I can pretty much balance very very slowly for about 5 metres after 10 minutes of painstaking effort, then I just sort of teeter over pathetically. I sort of "learned" as far as I got when I was about 8 or so, I guess. Again, it was my mother. Needless to say, I try to avoid situations where I have to ride bikes. It's embarrassing not to know how at my age.

Who taught you how to read, and at what age?
Myself, from a very early age. I'm talking 2/3 here, as soon as I could understand what reading was I wanted to do it. I was an absolute reading fanatic, and refused point blank to let my mother help me learn, to the point of throwing tantrums where I was practically frothing at the mouth. I'm still a little like that now, actually - I don't like to be taught entirely new things because I feel embarrased that someone is seeing me do something that I'm not yet much good at. I taught myself to write as well. With the help of teaching books and videos, of course.