How would i go about on writing a book?

How would I go about on writing a book?
I'm thinking about writing an autobiography or whatever that is on myself. I hope I have the right word for it.
How would I go about doing that?
Any feedback would be great.

well...I've nvr written an autobiography, but I've written lots of fantasy. its honestly easier. and I think you shud wait till your really old 2 write an autobiography, because you have 2 b old enough where all the events have happened allready in your life. I don't know how old you r...but if you were as old as im thinking im surprised you wud b using a computer.

OMG, writing a book is awesome! I'v enever actually attempted an autobiography (im more into fiction), but going about writing a book is easy! if me, a 15 yr old can do it, so can you! wow, that sounded really cheesey. anyways, just start writing stuff down, pretty much anything that pops into your head. but if you really want to finish it, you have to stick with it even when it seems really boring. I dont know how many novels I've started but didnt finish because I lost interest, and now I regret it. you should totally try, tho! good luck!

If you want to write an autobiography, I'd say keep journals, and then when you are older you would be able to refer to them. That way you would know for sure what happened and you wouldn't have to guess or struggle to remember. You would also know that you aren't accidentally making things up. Good luck to you and your autobiography