The internet in it's heyday, when it was a genuinely thrilling place to find information, and quite a lot of weirdness, and before it was swamped by corporate interests.
I remember starting out with gopher and a paper print out of 'The big dummies guide to the internet' which was a directory of almost every gopher and ftp site (pre web) along with a description of what you'd find there. Then the web came along and things got really good for a while. Once big corporations got involved it all went down hill.