NikNack: You can do some reading
http://renju.org/
learn about openings and attend online classes http://www.renjuclass.com/
please note renju is not exactly five-in-line, but can give some ideas :)
(hide) If you want to find out more about some games you can check the links section and see if you find any interesting links there. (pauloaguia) (show all tips)