Concrete is pretty cool to work with and it is a much easier medium than I originally thought. It can be made to do anything you want with the right forms. I found this tutorial from Instructables that is 13 steps, start to finish, for a kitchen counter. This is a very basic DIY but the counter will be great. There are some ridiculously complicated tutorials out there but this is a good place to start adventuring into the amazing world of cement.
Instructables Basic Concrete Countertop
Image Credit: instructables.com