I had lamented that I always Google too late, but lately I’ve been getting better. Here are some tools to use beyond Google and LinkedIn for searching for different kinds of specialized information.
A9 let’s you search the contents of any books that Amazon carries, all of Amazon, and another 500+ specialized information sources.
Citeseer, which seems to me to be more useful than Google Scholar, searches scientific and academic papers.
Krugle searches code examples and some related technical references.