Introduction to RSA from Kriegeskorte et al., assuming no background with MVPA. First half whiteboard, second half this paper:

Mur M, Meys M, Bodurka J, Goebel R, Bandettini PA, Kriegeskorte N (2013) Human object-similarity judgments reflect and transcent the primate-IT object representation. Frontiers in Psychol 4:128.

http://journal.frontiersin.org/article/10.3389/fpsyg.2013.00128/abstract