Dry, Brittle African American Textured Hair, I'm Mixed Black/White & My Hair Is A Mess, Please HELLLPP!!!?

I'm mixed, Black/White, I cannot for the life of me figure out what to put into my hair to keep it healthy, shiny, smooth, and silky. I'm only 22 but I have no one to help me learn about my hair or how to take care of it and keep up with the maintainance of it. It's depressing, I had to cut it all of because of breakage :( Please Help. I don't even know what to do anymore.