For only L$100 (introductory price) you'll get a 76 page THiNC book with illustrations on every page, detailing how to make stunningly realistic stained glass in Photoshop, how to quickly and easily make matching alpha channels with opaque leading and glass with various levels of transparency (whether or not you have a separate PS layer with the leading on it, without having to try to select the leading,) and how to construct four different types of Art Glass in PS, to use in your windows.

All of this is presented clearly, with lots of instruction, so even people with very little Photoshop experience can master the techniques.
Come and read it in the Library for free, so you know what you're getting before you buy it (like a RL bookstore.) While you're there, check out the books about Alpha Channel Basics, Clothing 101, and others!
Available now in the Texture Library, Livingtree 113, 97, 25. L$100 THiNC book.
That's The Texture Library on Livingtree if you can click on things here. Or check Robin Sojourner's Picks for a TP to the Texture Tutorials. The Library is right there, on the left.
See you there!