Mastery of Photoshop is no easy feat. There are plenty of tutorials and walk throughs available on the internet but circumstances can make that difficult for some people to learn. Especially if they aren't that tech saavy. Online and in person classes make learning Photoshop simpler.
There are 1 day classes available as well as 3 day classes. You can sign up for a group class which is a private teaching session for just you and the members of you group. The group classes are actually customizeable to your groups needs. There is also the on-site option for those that have group classes. This means the instructors would show up at your office and teach there. The other option is a public lesson. You would attend the public session once you sign up and receive hands on exercises and experience live instructors teaching. There is no E-Learning in public lessons.
The price range for a class is about $1,200 and the classes are available in numerous states from Massachusetts to Texas. The 1 day classes will teach you simple things such as learning the difference between raster and vector graphics. They will also teach you how to create layer masks. The more detailed 3 day classes delve into the finer aspects of Photoshop. You'll learn how to edit motion based content as well as how to manipulate images. The instructors will also show you how to utilize precise cropping over multiple layers.
If you wish to master, or at least become proficient, in using Photoshop then it is highly recommended to sign up for one of these classes.