Personally, I would have thought that a question about Photoshop should belong in this forum, rather than Techniques & Tips, which I've taken to be mainly about general techniques and methods for photography.
If Photoshop (including questions about resources to learn about it) doesn't belong in under the topic "Image Prodessing", what does?
(I've got a question about Photoshop I've been meaning to post myself, but now I really don't know where to put it.
Is the idea that any question (as opposed to informative posts) should be posted to Techniques and Tips, rather than a specific forum that would seem to cover the topic of the question?
It might be useful (at least to me) if the moderators were to come up with a somewhat clearer statement of the criteria they're using (and want us to use) in deciding what's on- or off-topic in a particular forum, particularly this one.
Robert Delfs