I also commend your enthusiasm. My son and I jumped right in to all grain brewing and we have never looked back. You won't learn unless you make mistakes but they are rarely so horrible and very seldom life threatening.
Do yourself a favor and check out John Palmer's site How to brew beer. You can access it free and it has a ton of information about the brewing process and all the equipment and tools you will need.
www.howtobrew.comalso a good brewing app will help tremendously with the calculations you will need.
God luck and don't get discouraged!