Documentation is at the heart of any successful open source project and, as Self wakes from its slumbers, documentation is vital to providing a way for interested people to learn and participate.
Self has a number of manuals, as well as important published papers, but these have been available only as pdf.
Three of these manuals (the Programmers Reference Manual, the Programming Environment Manual and the Morphic Manual) have been turned into HTML and combined into the new Self Handbook, which is available to read on line at http://docs.selflanguage.org.
This is quite comprehensive—in pdf form it is at the moment around 140 pages.
Read and enjoy 🙂