I'm pretty tired of teaching all my mates the basics of
Photoshop. Now that everyone has woken up and realised how much money they can save doing little photographic tweaks themselves (rather than hiring a designer whose skills far outweigh your little jobs),
a course like this is invaluable. I strongly urge you to do this course, if you still don't know how to use Photoshop and layers etc.
Especially for people who do any work ...