Step on Pins. com. I recently learned that the Pixeladies, Deb Cashatt and Kris Sazaki, have a regular Tech Tuesdays on their blog, where they address computer and Photoshop questions. Have questions?? Check out their site.
They will be teaching the online class once again in the fall. I highly recommend this course even if you have some PSE experience. It broadened my knowledge, and has made my work with the software go much more smoothly.