Bigleague- There are a number of books available out there that have alot of useful info.Lyman' s Guide To Big Game Cartridges & Rifles is a pretty good book to start with. It doesn' t have any of the new short mags or ultra mags in it, but is a good reference. There are alot of gun magazines also.

If you don' t have much experience with shooting guns, I would suggest looking at something smaller than a 7mm Rem Mag. Most of the people here aren' t bothered by the recoil, but that' s because most started with less powerful rounds (.30/.30, .243, .257, etc.). I think everyone is capable of shooting just about any caliber gun, you just have to work up to it.