Use the video link below for more examples.
http://www.khanacademy.org/math/calculus/differential-calculus/chain_rule/v/the-chain-rule
http://www.youtube.com/watch?v=ZvCWt4BjbyI
http://www.youtube.com/watch?v=cngzQ5xIOBY
Extra practice:
https://www.math.ucdavis.edu/~kouba/CalcOneDIRECTORY/chainruledirectory/ChainRule.html
Homework: book assignment 2.4 do 7- 29 odd.