Here are some other baseball sites you may find helpful. Be sure especially to check out Rick Roder's site. Rick is a baseball rules guru, and was invaluable to us in the preparation of the Baseball Field Guide, devoting his time and knowledge to help untangle many of the more obscure rules of Major League Baseball.
Baseball and General Sports:
Need a baseball field of your own?
Here's H & K Sports Fields' site. Great information and diagrams of baseball and softball fields for various leagues (Little League, High School, etc.) - and great info on things like this: How to Build a Batter's Box. And in case you're not feeling up to it yourself, they'll be happy to build a baseball field for you.H & K Sports Fields