Pascal on Unix System V, 1988. Problem is we started with the edlin line editor, which was just horrid. Later moved onto vi, which was nicer.
I liked Pascal, but my first real job was with C.
I did mess about before that with ZX Spectrum BASIC - mostly creating dummy game loading screens - and watching people in shops wait, and wait
Truth is I still think I'm learning, well hopefully. Like a lot of people I still use vi!
(Eh - hang on is this not an very old topic?)