I don't remember that much.
Since you paid by the minute I usually used it for like 10 minutes everyday and afterwards played video games.
I think I mostly lurked on german forums for my hobbies. I feel like it was way less addicting because the communities were smaller and not everything was designed to keep your attention. It was way too slow to download a whole game yourself so you usually borrowed video games from a fren, burned them yourself on a cd and then just downloaded a crack for it.
After I first got dsl a fren told me about youtube and I was confused why anyone would use that site. It was just filled with uninteresting low quality home videos of hobbyists. Lel.