Hi and welcome from near Athens, GA. Yes, there's lots of help here and a lot of folks to ask questions of. But where do you really start if you want to make your first quilt? First decide on a design/block. You can look at the tutorial section of this board for ideas. Nine patch quilts are the best way to start. It is important to establish size and fabric requirements so you buy the right amount of fabric. I agree, that once you determine amount, take granddaughter with you to select fabrics. If you have no place close, there are hundreds of online fabric stores, many of them owned by people on this forum. ASK anything...no one is snooty about this wonderful hobby!!
The first one will forever be a sweet memory for you!