Although I have been a photographer for the majority of my life, I feel that most of my growth has really come since digital photography became main-stream. I went to school to study commercial photography after serving in the army but, was unable to finish my degree program. Anyway, the point I want to get to is that there are so many ways for photographers to learn these days. I personally learn a lot from several sources. First, I check out the weekly podcast at http://kelbytv.com/photoshopusertv/ . Scott Kelby and his team really are a great group of guys and know what they are talking about. Their weekly podcast are free and have several tips on how to in Photoshop or photography.
I also go to the Adobe web site and check out their free tutorials. www.adobe.com . For me, checking out these videos makes me think of things I would not have normally done. Free is Good!