The project that I want to work on is restoring pictures that were scanned from some old 2x2 glass slides (by old, I mean 100+ years old). They were scanned at 2400dpi, so I have some nice approx. 4000x4000 pixel TIFFs to start with.
An example is the picture below. Mainly what I'd like to do on this one is to take out the lines from the cracked glass. But I'd also like to see what else could be done with it. So if anyone can point me to a tutorial, book, etc. I'd appreciate it.
(The image here has obviously been reduced and JPEG'd, but you can get the idea)

