I Have A 1994 Jeep Grand Cherokee Laredo And My Husband Handles All Of My Car's Maintenance But I Would Like To Pick Up Some Stuff For A Tune-up Cause He Doesnt Have A Lot Of Free Time.... What Do I Need Exactly?? Any Suggestions On Specific Brand Names??

normally distributor cap, and rotor, spark plug wires (if not coil on plug) spark plugs, pcv valve, fuel filter.

I agree with Fordin K - except I don't think the '94 Jeep Grand Cherokee has a PCV valve. The air filter should also be replaced if it's been a while. There are "tune up kits" available online, which contain all of the above items (distributor cap, rotor, spark plug wires, spark plugs, fuel filter), or you can buy them individually at someplace like AutoZone or Advance Auto Parts. Just give them the make, Model, & year and they'll get you all the parts. With things like spark plugs and wires I just go with a "typical" brand, as I don't find value in the more expensive "super performance" models of these basic tune-up parts. The whole shopping spree should cost less than about $80.