When I made some awful website with stolen pictures and a lot of awful colors that didn't match (with of course a bright lime green background, obviously), I needed a place to publish my code, and that book recommended Geocities at the very end, and I did. No one ever really went to my site outside of supportive friends and relatives, but it was still a lot of fun to talk to the other kids at my school and brag about how I had my own website. Keep in mind, this would have been around ~1999-2000, I would have been about 8-9 years old. This was before everyone had a MySpace; the fact that I had a website was considered "kind of cool". I thought it was anyway.
I loved GeoCities. I miss the world when everyone had their own awful web pages. Social media made things more approachable, and is in most ways better, but I think something is lost in the centralization of everything.
[1] https://a.co/d/4AYuTSx not a referral link or anything.