The internet has been great for the spreading of all ideas, especially libertarian related ones. A decentralized system that supports do-it-yourself learning mirrors libertarian ideals. The abundance of information can be overwhelming for those looking to explore new ideas. Here are a few basic introductions that may be helpful:
An introduction to Libertarianism
Myth and Truth about Libertarianism
There are also a variety of links to liberty-related websites and organizations on the right panel of this blog.