If the subject are interested you I highly recommend picking up the Quark and theJaguar, by Murray Gell-Mann. Its a foundational survey work in the subject and delightfully approachable (even though its theoretical physicist author doesn't consider himself much of a writer.) The author, who also happens to be the Nobel laureate whom gave the quark its name (after hypothesizing it's existence) is one of the founders of the Institute for Complexity Studies where much of the field's research activity is concentrated.
