first arduino project

I am interested in trying to use the arduino to create a remote controlled droid similar to a self driving RC car that can be in either autonomous or controlled mode. What arduino boards or starter kits would i need to get started on this project?

The Uno is the best board to start with. It may not be what ends up in your droid but can be used for other things like installing bootloaders onto blank chips and other odds and ends that always need doing. I have at least a dozen of them kicking around, some just loose boards, some attached to mounting plates with breadboards.