Link to a video which cover a lot about RF (a lot of which I've seen on the CWNA exam)...
Added another link.
Thanks for these by the way. Just wanted to acknowledge that it's appreciated.
The link below is the Globeron ALP Official CWNA training material (400+ slides for self study)
and additional Globeron information per chapter at www.globeron.com/onlinetraining
it includes the practice tests for the exam and Pearson VUE Exam voucher for CWNA-106.
Alternatively we have the instructor led training with customers having high passing rates
over the 90% (last customer had 97% score, but it requires dedication to study)