Black Berry Bushes

Hi,
I am J.R.Misra and I live in Charlotte NC. I live in a development. Behind my house there is a big hill which perhaps happened when the builder was leveling the development to build houses. Initially they promised to plant different bushes but after we bought the house the plan was dropped.
I have been trying to plant bushes and have little success. Recently some one suggested that I consider planting Black Berry bushes which does not need lot of care and will provide berry and grow and cover the bald area of the hill.

I am looking for some one to help me where I could get black berry bushes in a moderate price or even free.
Any other suggestion is welcomed and I am open to it all.
Thanks for your help
JR


A signed copy of my book, "Easy Plant Propagation" is a great gift idea!