Official bladeRF forum

I think many people already know about http://complextoreal.com/ , this set of courses by Dr. Wickert is perhaps less well known but equally impressive and useful : http://eas.uccs.edu/wickert/ , in particular the provided videos are very nice

In addition to the aforementioned course, I also bought the "Signals and Systems for Dummies" book by Mark Wickert. I found it to be a great complement to the online course. Here's the amazon link: http://www.amazon.com/Signals-Systems-D ... 111847581X