hi. It's been my experience that open source material in the form of books are not normally covered in bookstores. Sure you'll find a section on linux but it is general basic stuff. But i have had trouble finding books on blender, certification, etc. They have a million books on photoshop but none on Gimp. You may have to look on amazon or something similar, although you might have a better chance finding apache books in stores. Other then that try putting "how the .vm templete interacts with Java." into
www.google.com or
www.google.com/linux if you haven't already. Also for future reference try to be more specific when you make your topic title. "Quick questions" doesn't tell much and you probably won't get much response with one like that.