When did you first try Lisp seriously, and which Lisp family member was it?

1983. ALLL, a specialized Lisp interpreter that was part of a DBMS I built with some friends (Maclisp-like, with optional parentheses).

What led you to try Lisp?

Specific recommendation of a friend; joining a project that used Lisp.

Where did your road originate?

General curiousity about programming languages.

How far have you gotten in your study of Lisp?

I've worked on Lisp implementations for well over ten years, and I like language lawyering anyway, so I know the standard, and am familiar with various internals.

What do you think of Lisp so far?

It's definitely the best tool for anything that is not pure bit-twiddling.