I found a great tutorial on binding from a website called:
hellomynameisheather.com
Scroll down the page a bit to find the binding tutorial - it's on the right side of the page. I have it printed out & keep it pinned to a corkboard near my machine so I can refer to it every time I put binding on a quilt. I always pin the binding down as directed, machine stitch it (right sides together) to the front of the quilt with the walking foot, then hand stitch the back while watching a good movie. None of my quilts have puckered (so far). The tricky part is connecting the last bit of binding. There is also a GREAT video on Youtube on binding that solves this little problem: Quilt Binding: Joining Ends, Marci Baker of Alicia's Attic. Hope this helps!