Section 4.5 Reference Topics
Here is a statement of the binomial theorem (with links):
http://mathworld.wolfram.com/BinomialTheorem.html
This link gives some examples of the binomial theorem:
http://www.acts.tinet.ie/introductiontothebinom_674.html
Here are some tutorials:
http://www.mathsdirect.co.uk/pure/purtutbin.htm
This site presents a nice introduction (with practice) to binomial experiments:
http://www.aacc.cc.md.us/dfsymancyk/web135/binomexp/binomexp1.html