New to using professional hair dye

I've had my hair blonde for a month (I naturally have dark brown hair) and last night I re-dyed my roots (I should have used bleach but instead I was stupid and just used a box of ultra light ash blonde to color my roots. So long story short I now have orangey roots in some places.
I'm tired of using crappy box dyes and would like to use stuff that is sold at Sally Beauty. However I have a question I want use Loreal Quick Blue Bleach, what strength of developer do I need? Then do I need to buy a blonde hair color and developer? If so what strength of developer do I use for the hair color?

Thanks for the help.
I have a question though, I noticed Clairol makes a Born Blonde permanent toner and a Born Blonde semi-permanent toner. Which one is better to use?
I can't wait to go to Sally! The closest one is about an hour and half away but it's worth the drive.