On the website of the University of Tilburg there are several online courses available to help you search and find literature

1. Scientific literature
http://www.uvt.nl/diensten/bibliotheek/instructie/litond/
The course offered on this site is developed by the Library of the University of Tilburg. You will learn a systematic approach to search and use scientific literature. It also teaches you how to cite references when writing your essay/report.

2. Interactive instruction method TILT (Texas Information Literacy Tutorial)
http://www.tilt.ihol.nl/
An instruction module where you will learn to quickly and systematically search, select and evaluate information by way of six different subjects ( from freedom of speech to e-commerce.)

3. Searching on the World Wide Web
http://www.uvt.nl/diensten/bibliotheek/instructie/www/onlinecursus/
This module developed by the University of Tilburg is for everyone who wants to know (almost) everything there is to know about searching and finding information on the World Wide Web

Google Search Tips