I recently found out that as a member of the New York Public Library I have free access to all of Lynda.com's excellent video courses from any computer (plus all the course file downloads). They have partnered with many US libraries so might be worth checking if yours is included. 
 
Anyway, they have a ton of audio courses. But I was a little disappointed to find that they only have ONE Sonar course, "Up And Running With Sonar X2" - this is in comparison with Pro Tools (17 courses), Ableton (12) and Logic (17). Admittedly the situation is just as bad for DAW's like FL Studio, Bitwig, Studio One and Reaper, but I wonder if Cakewalk could do more to persuade them to update their Sonar course - I mean it's 2 versions behind for pete's sake! 

Sharke, you can get to Lynkeda-In.com--er, I mean Lynda.com (referring to Linked-in buying Lynda) through your library? How cool. Those courses are, as a rule, top-notch. I agree with you that Sonar is under-represented, but I point out, to anyone interested, that a lot of those Pro Tool courses are more general production topics ("Mixing a Rock Song in Pro Tools", for example), and any Sonar user can follow along and benefit. A high pass filter works the same way (should, at least), regardless of DAW. I've watched a few of those Brian Lee White courses: he's doing your basic sound booth engineering, he just happens to be using PT, but it hardly comes up in the dialog. (He also, they ALL also, use third-party plugins that you or I or any PT user may or may not have access to.)
 
Also, there are a lot of Lynda videos about some specific aspects of audio production (ex. "Mixing a Modern Jazz Track") that ALSO use PT (even though it's not in the title), but us Sonar users (and the other major DAW users) would benefit from as well.
 
Okay, granted, the course "Pro Tools 11 New Features" is probably not useful to Anyone except PT users (one would hope), but a lot of those courses apply to anyone using a decent DAW.
 
Haha, you know what would be an awesome course? "Transitioning to Sonar from Pro Tools" or even better "Upgrading to Sonar from Pro Tools".

You have a point there, come to think of it Brian Lee White's mixing and EQ courses were the first two I ever watched and they are absolutely awesome.