Returning Hair to Natural Color?

I wanted my hair to be blonde on top and black underneath. The blonde I picked didn't take. So I waited a month to redo it. I just dyed my hair with a very light blonde (bleach). I am not good with bleach and I have very long hair. Plus, the bottom was still black. So now I have black underneath my hair, bleached blonde in the circle of the top of my head and the rest didn't take the same so it was like orangish, with a strip of light brown that refused to bleach for some reason.

Anyway, that was last night. This morning I tried to even it out. I was afraid to re-bleach, so I dyed it with a dark ash blonde. Now it is a total mess. It is still black underneath, still blonde in the middle of the back, with some great ash areas that took where the bleach didn't, but there is a grayish look in the middle.

My goal at this point cause I didn't like the black anyways is to have light ash brown hair, which is close to my natural color. I dont know how to even out the top and I don't know how to get the black out. I deep conditioned after both dye jobs and I have leave in oil in it too. My scalp seems fine. I don't think I damaged it. My hair is light so I guess it is weaker, but it is really soft, not fried.

I am not going to the salon. My hair is really long and they charge way too much money for the lenghth. Plus, I don't want to. I want to do it myself. I was thinking of bleach in shampoo which I read about. Will that even out my hair? Can I get rid of black with that?

Please give advice, not just go to a salon, cause if I was going to the salon, I would not have gone online. Trial and error is how you learn.

Thanks.

By stellaB