I would say probably, for the most part.. there will be one or two things that access differently... and, considering that it says "Photoshop" and doesn't name any of the CS series, it should be ok.. just remember that some of the descriptions will be different. Even though I have CS5, I still have The Gimp on my sys.. it IS very handy.

  All the concepts will be the same, and, since, like I said, it only says Photoshop.. it should be reasonably generic. Before you start, though, I would be sure you have a good grip on The Gimp.. where things are and so-on.  there are plenty of tuts out there specifically FOR The Gimp.. here are a few links.

www.gimp.org/tutorials/     www.gimp.org/tutorials/The_Basics/   www.ghuj.com/

http://www.noupe.com/how-tos/30-exceptional-gimp-tutorials-and-resources.html

Hope this helps. Lou.

"..... and that was when things got interestiing."