http://www.amazon.com/Illustrated-AutoCAD-Quick-Reference-Guide/dp/1111648492/ref=sr_1_53?ie=UTF8&qid=1328948403&sr=8-53" rel="nofollow -
http://www.amazon.com/Illustrated-AutoCAD-Quick-Reference-Guide/dp/1111648492/ref=sr_1_53?ie=UTF8&qid=1328948403&sr=8-53" rel="nofollow - The Illustrated AutoCAD 2012 Quick Reference Guide (Illustrated AutoCAD Quick Reference)
by http://www.amazon.com/Ralph-Grabowski/e/B000APEPLA/ref=sr_ntt_srch_lnk_53?qid=1328948403&sr=8-53" rel="nofollow - Ralph Grabowski
And, don't laugh... this one can also be helpful:
http://www.amazon.com/AutoCAD-2012-Dummies-Computers/dp/1118024400/ref=sr_1_5?ie=UTF8&qid=1328948195&sr=8-5" rel="nofollow - AutoCAD 2012 For Dummies (For Dummies (Computers))
by http://www.amazon.com/David-Byrnes/e/B001IGV37Y/ref=sr_ntt_srch_lnk_5?qid=1328948195&sr=8-5" rel="nofollow - David Byrnes
Encourage your employer to get your license on Subscription if it isn't already. Once it is, go there to find online AutoCAD training materials. Use the AUGI site too and join if you haven't already- it's FREE! At AUGI look for the training links. There's lots of stuff there. Stay connected to this forum, the AUGI forums, and the Autodesk forums. Read the 2012, 2011, 2010, and LT forums. There's a lot of cross over in them. And build your list of AutoCAD blog sites in your browser favorites.
For more formal training Google "autodesk certification training" and take your pick. I like Ascent, but YMMV. You'll have lots of options and price ranges.
But you seem to have the right attitude to get yourself trained. It just won't happen overnight, so don't get discouraged. Learning AutoCAD takes time, practice, and persistence. And it should be fun, not hard. So make it fun. Get your work done, mistakes and all. Every project will be better than the last one... but none completely free of mistakes. Try to learn at least one new thing every day! Before long you'll be answering questions here too!

Dave.