Resources

Basic documentation

What is Free Software, by the FSF
Why Switch to Linux?

Some more readings

Free Software, Free Society: Selected Essays of Richard M. Stallman

One thing I like about open hardware and software is that instead of making a few people very rich it can make a lot of people a little bit richer, David Rowe

Software

Free Software Directory, a project of the Free Software Foundation (FSF) and United Nations Education, Scientific and Cultural Organization (UNESCO)
Ubuntu, a mainstream GNU/Linux distribution