A *(Learning Lounge) course.

<a href="http://plato.stanford.edu/entries/logic-substructural/">Entry in Stanford Encyclopedia of Philosophy</a>

The book <a href="http://www.phil.mq.edu.au/isl/">An introduction to Substructural Logics</a> seems to be the only good introductory resource to the whole field together. There are, though, lots of introductions online to special substructural logics (for example linear logic; See _(Linearity 101)).
