My hair is pretty short now, (I'll attach a pic) and I want to dye it. I don't care too much about damage because it'll be trimmed off soon anyway, although I'll be doing a lot of treatments to make it look healthier.

But what bleach should I get, do I need to bleach it multiple times? (I don't want the orangey color, because I'd prefer to have maybe a few blonde streaks as well as some colored ones). And how do I apply bleach and color all the way to the root without staining my scalp?
I won't go to a stylist to do it, so only at home DIY tips please
Attached Thumbnails
Never bleached or dyed before, a few tips?-makesup-okay.jpg  
I'm 15 now but I don't get on often so I may be 67 by the time you read this.
My name is Sarah.
I come on here when I want hair advice because if you type in "curly hair" anywhere, all you get is advice on how to curl it. I used to get on here a lot when I was like, 12 or 13 (and first figuring out how to stop straightening my hair without being bullied), so if you happen to see some older posts of mine, shh. No judging.