[Blindmath] LaTex, Nemeth Code, and Chatty Infty

[Billy Baer]

Hello,
 
I very much appreciate the feedback I've received thus far regarding my
previous questions. However, I could use any suggestions regarding the
following:
 
1) Does anyone know of any online, distance learning, tutorial, software,
etc., to learn LaTex and the Nemeth Code? I do want to mention that I am
proficient in Grade 2 Braille.
 
2) Unfortunately, I am still having problems downloading the Chatty Infty
Demo. I have tried everyone's suggestions and I can only get as far as, once
the demo is installed and engage it from my desktop, (from what my
girlfriend tells me)  the processing hourglass appears and within a few
seconds disappears without the demo opening. I've emailed Eugene at Science
Access and tried his suggestions with the same results. I don't know if it
is my system or what. I do know that I am very frustrated. I would gladly
and greatly appreciate any possible suggestions.
 
Many thanks,
Bill