Can anyone recommend a good place in getting started with photoshop? I use a stock DSLR, stack in nebulosity, and then go to photoshop to stretch and post-process, and I feel like that last bit is the weak link in my workflow (other than figuring out debayer settings, maybe). Anyone got any good tutorials for getting started? It's galaxy season, so that would be an ideal place to start, but any tutorial would be a good start methinks