MY go to quilting bible is: The Quilter's Pocket Reference by Peggy Scholley. I have given a few as gifts and the quilters who received them love it. Most of the LQS's have it near their cutting tables to help quilters before having their fabric cut.
If you are a total newbie to quilting then I'd suggest All-In-One rotary Cutting Magic with Omnigrid by Nancy Johnson-Srebo. This explains how to use the angle lines on the rulers. If you have had a quilting 101 type class you don't need this one.
This way you don't have to go online whenever a question arises.
Of course, I am very fond of my EQ program. I usually use it to show others what their quilt will look like and how much fabric they will need. The print function also includes how to rotary cut, printing paper piecing patterns, and printing templates. I just sent the picture and info for a dear friend who I will be doing a quilt for so she could see the pattern, thanks to the export function. This way she is involved even though far away.