So it looks like setup on ubuntu should be pretty straightforward. Follow these steps to install the java client as a package: https://geti2p.net/en/download/debian
Then under their Post-install work on the bottom of that page follow this:
as a service that automatically runs when your system boots, even before logging in. The service can be enabled with "dpkg-reconfigure i2p" as root or using sudo. This is the recommended means of operation.
That will cause i2p to automatically run at startup. You can use the other methods there if you don't want that behavior. Lastly, you'll need to configure a browser to use i2p. https://geti2p.net/en/about/browser-config
Firefox is a good one to use for it but you can use librewolf or another one.
And I think that's it as far as setup for ubuntu. Let me know if you have more questions : )
100% agree with this. Ever since getting into shrooms the world has become so much more alive and I feel far better about life in general. I run a community for magic and mysticism if anyone is interested called !magic@wizanons.dev which focuses on this type of discussion. Anyone is welcome to join the discussion or ask questions.