Unfortunately, I think Lee has just about the most worthless manual out there. It never hurts to have another one, so I'd say Hornady, Speer or a Lyman manual would be worthwhile to have on hand. There's also the ABC's of Reloading.

When you're starting out, just try to match a load out of the book as closely as possible (same / similar bullet, same primer, same brass... ).

If you want, PM me an email address. I have a bunch of old manuals in PDF around here somewhere. The data might be outdated, different powders, etc, but the how-to section in the beginning hasn't changed much (if at all).