Hi there! You have quite a few options in front of you! The first thing you need to do is get that sucker basted--that is where you are putting the top, backing, and batting all together. The most popular way to do this is with safety pins (don't use straight pins!), but my personal favorite way to do it is to buy basting spray, a wash-out spray glue that will keep everything from moving around on you, and you won't have to worry about removing pins while you're quilting.
After you're all good and basted, you get to quilt! For a first time quilter, straight line quilting might be a good way to start out with--you will need a walking foot! One of the easiest ways to straight line quilt is to follow your seams. For instance, if your quilt is made up of five inch blocks, you could sew right next to every seam (or sew diagonally through each square). When I follow a seam, I usually position my quilt so that the edge of the quilt foot runs right next to the seam, that usually makes my quilting line about 1/4 inch away from the seams.
Another option instead of quilting it is to tie it with thread or yarn. You would want to place ties evenly around the quilt.
Also, how big is your quilt? If it's super big you might want to think about sending it out to a long arm quilter because a really big quilt can be very difficult to maneuver on a small home machine. I don't like to quilt anything bigger than a lap quilt, myself.
I'll come back here when I get a second and share some links with you!