There is a local guy here who sells guitars, and he knows a lot about them. In his April news letter (which is still available on his web site @ www.willwestmusic.net) he discusses care of your axes.
There is a good discussion on one of the harmony-central.com forums. They explain what lemon oil is and what kinds of stuff to use on different materials necks.

But, first of all, take your guitar to the guys who have sold it to you, they should take care of the neck. AND DO NOT LET THEM GET RID OF THE BUZZ BY RAISING THE BRIDGE!