Cindy:
It is exciting to have new people join us in this hobby. I can tell you that you will definitely appreciate the object locator. It is not a gimmick. It actually works as advertised. I recommend that you start to look at the moon, planets and star clusters first since they are relatively easy to find (even without the telescope) and gives that instant gratification feeling.
Still, one of the most challenging and rewarding aspects of this pasttime is to actually learn the sky. Whether you get an object locator or not, do yourself and your family a big favor and invest in a couple of more items:
1) Buy a book(s) to introduce you to astronomy, and spend the time reading it. Then go outside a learn the basic layout of the sky and the constellations, like the big dipper, or the zodiac belt for example. Make sure it is dark enough to really see stars and use lawn chairs if possible.
2)Get a pair of binoculars. You do not need to spend a lot of money here. Buy a pair of 7x35, used if possible. Anything bigger is hard for kids to hold anyway. The idea is to be able to see more stars and "fuzzies" (a term you will hear a lot).
Having the advantage of the object locator can diminish the potential for a full appreciation of how the universe is layed out for us to enjoy. So make sure you get the full experience, and good luck.
Keep us posted.
Rey