You might want to check out mercola.com for his suggestions. The Blood Type Diet has been beneficial for many people. Another option is determining your metabolic type and eating accordingly. The Metabolic Typing Diet by Wolcott and Fahey allows you to determine your metabolic type and suggests eating plans....Dr. Mercola highly recommends this book and approach.
Most important, though, is that you pay attention and learn what your own body needs and what allows it to function at its best... everyone is different and no diet is suitable for everyone. You're right...all the information out there is very confusing...but your body KNOWS!