Regarding using Lisp in LT, there is a great software at a very
low price. It is LT Extender.

Please look at this: http://www.lt-extender.com/LT-Extender/englisch/default.htm

With best regards
PRSS

Hi Bayer

As modelhead said, the best place to learn is here. The SU for dummies book is pretty good too, as are the Aidan Chopra books.