The AirWave training is currently at version 7.2 and will be released as 7.4 during February if our development schedule goes as planned.
The course (both current and 7.4) covers many features and best practices with the AW product.
My opinion may be biased, but I recommend taking the class. :)
Note that the course is also available through our remote learning system as well. You can stay home, participate in live lectures and then practice real-time on AW servers in our remote lab.
Kevin