I selected "The Movies (I-X)", but in fact the process was gradual.
1. I saw some TOS episodes when I was young and was interested in the characters and setting, though I think even then the cheesiness and some of the lesser episodes turned me off. I think I saw the first two movies on TV and enjoyed them.
2. A major turning point was reading about the upcoming third film in New Voyager magazine, studying the pictures and being fascinated by the sfx details. I remember it was printed in white on a black starfield, which with my young eyes I found quite readable.

I think I saw TSFS in the cinema, and TFF, which I liked better, though they both made a strong impression.
I didn't like TNG, and found DS9 interesting in its first seasons but too inconsistent. But this led to my next turning point, prompted by a DS9 episode.
3. I really disliked the portrayal of Vulcans in that episode (which I think must have been
Field Of Fire), and eventually realised that I must be some sort of fan if I knew and cared that much about such an issue.
4. Enterprise. Admittedly inconsistent, this was the first series where I didn't have to mentally compensate for TV budget sets and fx. I also found the characters more relatable than the pontificators of previous Berman shows, and the cartoon characters of TOS. As with the Vulcan issue above, I found myself contemplating matters of world-building in relation to various iterations of Trek, which ENT developed in various ways. The fact that the series was cut short also stirred my imagination in a way the previous complete or episodic series didn't. Which all led to:
5. Joining a Star Trek forum. Which is where we came in.
