Learn from other skeptics (Score 0)

To get started learning about skepticism read blogs and listen to podcasts such as these:

http://www.skeptic.com/index.html
http://www.badastronomy.com/
http://scienceblogs.com/pharyngula/
http://whatstheharm.net/index.html
http://www.expelledexposed.com/

Then when you find a science topic you are interested in, read a lot of books about it so that you can be comfortable enough with the topic to think critically about new discoveries and claims and to explain it to others.

The blogs I listed tend to recommend more good books than I can keep up with.

Be warned though. Skepticism and science are addictive and fun and tend to piss off the intellectually lazy.