Trying to get to blonde...

So, I naturally have medium Auburn hair (that I haven't seen since for about 7 years lol). I've dyed my hair almost every color imaginable, but here lately I've been dying it dark red. I wanted to try blonde again since it's been a while since I've been blonde. So I started with blonde highlights that I did myself at home. I've done them before and it worked great, so I thought it would be easy. Boy was I wrong. The first mistake was that I dyed WAY too much of my hair, it's dark underneith and yellow on top! The yellow is disgusting, I wanted more of a true blonde, not a banana yellow blonde. I don't know if it's because I've been dying my hair red for a while or what. What can I do to cancel out the yellow? I was thinking to get a box of a light ash blonde dye, but what would that do to my red hair that hasn't been highlighted? My hair is pretty damaged from the bleach already, so my next question is what can I do to get my hair in better shape? My hair is really curly, but now where it's blonde I don't have the cute ringlets anymore. Oh boy, how do I get myself into these situations?? lol. Thanks for helping, you guys are like hair experts!