What are the differences between different types of diabetes?

What are the differences between Type 1 and 2 Diabetes (and others forms if there are any)? What are the early symptoms and what are ways to reverse diabetes. I suspect I may have have early signs, I'm tired with no energy, cranky, pee every hour even though I didn't drink a lot of fluids, I feel "funny" after I eat something sugary (almost like a high, but not hyper more like my head is out of it). I'm not extremely obese, but I am about 25pds overweight (5'6 158pds).