What are some diet plans for a diabetic with high cholesterol?

I am an uninsured diabetic who just found out that I have high cholesterol as well. Because I have no insurance I see a sliding scale doctor. They pretty much diagnose me, prescribe medication and offer me little to no advice as to what to eat. Can someone offer me some advice on a diet that may work to lower my cholesterol as well as keep my sugar where it needs to be?