When NEMO was started I think the first resource paper was "18 Hints for Rookie Teams." Probably needs a little updating, but lots of good information in the NEMO resources section thanks to the collective wisdom of the teams.
http://www.firstnemo.org/resources.htm
Encourage one of the adults (technical or non-technical types welcome) on your team to join the private NEMO forum. See the website for more information.