In evaluating Daubert issues, the federal courts frequently consult the Federal Judicial Center's Reference Manual on Scientific Evidence, now in its second edition.
Also worth a look is the FJC's Manual for Complex Litigation (Fourth).
A less well known but nevertheless worthy resource is the State Justice Institute's Judge's Deskbook on the Basic Philosophies and Methods of Science.
The National Traffic Law Center has gone to the trouble of developing a convenient chart identifying which state court systems had adopted Daubert as of 1999. The Huron Consulting Group has done the same as of 2004.
The ABA Model Rules of Professional Conduct offer guidance to the troubled soul.
To view or download some of these materials, you may first need a free copy of Adobe Acrobat Reader.
Some other Daubert-related sites (no warranties, express or implied):