ZDNET has a great article with 10 Google Search Secrets that can help you and your students search more effectively and efficiently.
Knowing how to do effective internet searches is a very important skill for all of us to have, so share these resources with your students and help them learn this valuable skill.
Google - free posters with search tips for teachers
Google for Educators - Resources for using Google in school
Tips on better searches on Google, from Google
Infographic on better searches using Google
10 Tech Skills Every Student Should Have