Lernanta is the software that supports P2PU's site, which started as a fork of Mozilla drumbeat's Batucada project.
To help out with Lernanta, join the P2PU dev mailing list and introduce yourself. We're currently looking for help from Django / Python and front-end (HTML, CSS, Javascript) developers.
Interested in getting involved in Lernanta code development? Check out the development wiki for more info!
Looking for setup or install instructions? Take a look at the install docs in our wiki.