Welcome to TRF, Eljay!
An Estes Beginner Special pack is an excellent choice. You get a launch pad, an electrical ignition system, a rocket (some rockets are 'ready to fly' straight out of the box), and a couple motors. Use the Michael's MJ Design coupon (in your Sunday newspaper) for 40 percent off, and see what starter specials they have.
One of the cheapest places to find motors is at W-mart. Or, use another Michael's 40 percent off coupon and buy an Estes 'Flight Pack' (two dozen motors, igniters, wadding) for about $27-28.
If you want to try more kits, you just missed the half-price sale at Hobby Lobby. Watch for posts here on TRF, or check the HobLob website, because they run specials like that about every two months.
While you are waiting for the next HobLob sale, check out the Fliskits offerings, as well as Thrustline Aerospace. Both these guys have lots of good stuff and will take very good care of you.
And come back to this forum and ask lots more questions!