[SlightlyBroken]

So my hair is currently a reddish brown. I haven't been very kind to it lately. I have died it like once every three weeks for the past year. I haven't died it in like a month now and I want to dye it one last time before I stop. I think the really damage is I haven't cut my hair in over a year and now the broken ends have started going far up on my hair. So I am going to cut off the split ends and that should help. I want to dye it dark brown with purple and blue streaks. I need advice on the best way to do this without killing my hair too much.
I would like to have really bright blue and bright purple streaks should I go to a hair salon is there a certain brand I can use? Any advice on keeping up with my hair?