I just came across this site today, and it looks awesome. Essentially, Window Farms is a non-profit organization in New York that has developed a free, crowd-sourced model for learning about, collaborating on, and developing new ways of gardening at home indoors.
They have a community forum for sharing thoughts, questions and ideas, were you can also create your own blog to catalog your gardening. It looks like their hearts are truly in the right place – both in terms of the environment, and in terms of how gardening can improve social well-being and provide much needed nutrients for little to no money. Something to think about if you live in an urban area – they have downloadable manuals on the site, which are all free.