Just copied and pasted this from another post I made....
I have zero previous IT background, to the point that my expertise extended as far opening Internet Explorer and accessing Facebook, the remainder of the past 10 or so years having being spent in the army and physical security jobs. the only IT 'training' I have has literally been, YouTube and a pocket reference book on Linux.
I paid $300 for a pentesting course from elearn Security, packed with (like was said before) theory and bare bones examples, the only thing it did do well was to teach a good bit for beginners as regards TCP/IP and networking principles, but you can Google that or pay $30 for a book off Amazon, or download a pdf for free on a Kindle etc etc.
As far as the CWSP goes, I'm halfway through that and it is bang on, the student guide is thorough, well presented and easily understandable (even the ARP section isn't too bad) and the video demonstrations are likewise, with real world problems demonstrated, explained and solved, you really do get the chance to see how the attacks should work and what may be wrong if they aren't.
I have used other sources previously, Vivek Ramachandran's, 'Backtrack 5 Wireless Penetration Testing', which whilst very good with lots of little helpful tips about the broader aspects of wireless devices within BT, lacks the flow and personal touch of CWSP.
In addition the videos are very unintimidating to the initiate, everything is made clear and thoroughly explained in a very human way, you are being spoken to and taught rather than at and instructed, if you know what I mean.
Basically, it's great, and at 80 bucks, what's not to like?!