Here is a collection of links to resources I find on the net relating to Artificial Intelligence
Neural network introduction – Simple explanation of Neural Nets and a bit about how they work.
AISpace – A great collection of useful tools to WATCH how common AI techniques work.
ruby-fann.rubyforge.org – Ruby gem to wrapper FANN.
FANN – Fast Artificial Neural Network Library is a free open source neural network library, which implements multilayer artificial neural networks in C with support for both fully connected and sparsely connected networks.