I have been working on two of my pet CDROMs.
The CDROM "Why is Linux good for me ?" is a new avatar of the popular (famous ?) CDROM "Linux in a teaspoon". This CDROM is now fully updated and ready.
I have also created an encyclopedic CDROM on LaTeX. You will find an answer to almost all your questions, or at least find a pointer to where you can get the answers. Good for teachers of mathematics, and students.
You can of course ask for a live presentation of Linux or LaTeX (or both), and get these CDROMs free of cost.