There are a plethora of web sites, Videos and books on the subject. Some of these are listed below:
Web Sites
What is Meditation?
www.artofliving.org/meditation
Meditation Station
http://www.meditationsociety.com/what.html
Meditation... Towards a Stress Free Life
http://www.healthandyoga.com/html/meditation.html
The Different Types of Meditation
http://www.spiritualnow.com/articles/20/1/The-Different-Types-of-Meditation/Page1.html
5 Meditation Styles for Beginners
http://www.fitsugar.com/5-Types-Meditation-18949375
A Simple Meditation Technique
http://www.ananda.org/meditation/learn/technique.html
Meditation for Beginners: 20 Practical Tips for Quieting the Mind
http://zenhabits.net/meditation-for-beginners-20-practical-tips-for-quieting-the-mind/
Books
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Easy Meditation Techniques For Beginners: 21 Experts Discuss How To Meditate And The Practice Of Deep Daily Meditating by Zoe Salisbury
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8 Minute Meditation: Quiet Your Mind. Change Your Life. by Victor N. Davich
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Finding the Still Point (Book and CD): A Beginner's Guide to Zen Meditation by John Daido Loori
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Meditation for Beginners: [Abridged] [Audio CD] by Jack Kornfield
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Meditation for Beginners by Vikas Malkani
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Meditation from the Tantras by Swami Satyananda Saraswati
Videos
How to meditate
http://www.youtube.com/watch?v=e0rSmxsVHPE
Simple Meditation Techniques: Proper Breathing in Meditation
http://www.youtube.com/watch?v=HW_Jd23os-Y
Learn to breathe correctly
http://www.youtube.com/watch?v=KNA49dhqV-w&feature=related
How to do a Stress Meditation
http://www.dailymotion.com/video/xh81zl_how-to-do-a-stress-meditation_news#