well for starters:
http://en.wikipedia.org/wiki/Pierre-Joseph_Proudhon
http://en.wikipedia.org/wiki/Mutualism_(economic_theory)
http://www.mutualist.org/
http://mutualist.blogspot.com/
http://all-left.net/
http://leftlibertarian.org/
Mutualism was created by Pierre Joseph Proudhon in the nineteenth century, and it stood in opposition to both statist capitalism and marxism. Proudhon was really the first anarchist, and was one of the first to adopt a much more libertarian strain of socialism.
Mutualism is essentially an individualist interpretation of socialism. It opposes outright collectivisation of production and distribution (communism) and supports (limited) private property in labor. Proudhon basically believed that workers had the right to the fruits of their own labor, and believed that this could best be achieved through worker cooperatives. He was an anarchist, so he opposed state-ownership and control of industry, and supported more decetranlized worker organizations (he identified as a federalist).
However, proudhon did not support private property in land, and coined the phrase "Property is Theft". (I can go on for hours on proudhon's view of property, and property in general, but i'll try to just give a breif summation). Proudhon basically believed that there was no difference between a despot controlling a country or a landlord controlling land. They have the same authority and powers, only on different scales. He believed in individual ownership of land, but only ownership based on possession. In his most famous work, What is Property?, he argued that property in land should be handled so that people only take what they naturally possess - he opposed absentee ownership. Basically, you own the land you live on or work on, but if you get up and move and find somewhere else to live, then you no longer have a legitimate claim to that original piece of land. He also claimed that in order for property in land to be legitimate, "it must have equality for its condition".
Now, as mutualists support those worker cooperatives, they also support markets - being anarchists, that's considered a "free" market. Kevin Carson (a modern mutualist) argues that class hierarchies (capitalism) is a direct result of government intervention, through money and land monopolies, intellectual property, subsidies, and discriminatory taxation. He believed that left to itself, a truly free market would exemplify socialist principles - ie a classless society and the liberation of labor from expoitation. To facilitate these socialist markets, mutualists support a democratically run mutual credit union, which would facilitate lending and investment into companies. It wouldn't have to charge interest, but if it did, any profit would belong to the community as a whole.
I hope that helps. Those sites listed above have some great resources, so if you're interested in learning more about mutualism, or PJ Proudhon, then check 'em out. I really like proudhon, and seeing as you're an anarchist, I don't think you could get by without researching or studying his philosophy.


