Quilter's Complete Guide by Fons & Porter is the quilter's bible IMHO. I used to teach quilt classes and recommended that all my beginner quilters get themselves a copy.
Relax and have fun! Remember that it takes time to learn the new skills you need to become a quilter, lots of lingo to learn too. Don't be so hard on yourself. This is supposed to be fun.
Always,always remember to close your rotary cutter when you're done with a cut, its very sharp.