From i2p on reddit. Link is to an i2p page so start up your i2p instances.
In this tutorial, I will show how you can make your own private XMPP server, where you will have full control of your user data, messages, groups, files, all of that federated over anonymizing networks such as tor and i2p.
Yeah, normal internet is sometimes referred to as clearnet.
I believe there’s a debian package for i2p that you just install and open your browser to the console-page.