Many adults feel poorly prepared for dealing with many of the things in the Cyberworld. There are programs like Twitter which you see everywhere, but may know nothing about. Some people are worried about privacy issues. Technology changes so fast that it is difficult to keep up especially if you are not comfortable with it to begin with.
If this sounds like how you feel check out Cyberwise. http://www.cyberwise.org/
Cyberwise is a new website that provides some free training on current topics that can be really fun and helpful. Topics covered are New Media, Media Literacy, Digital Citizenship, Prezi, Glogster, Twitter, Ethical Use, Privacy, Reputation and many others. Each "learning center" has a short (under 5 minute) video on the topic and often something to read online or print out. There are also many links leading to other information on each topic.
Cyberwise also offers a course called Be Cyberwise Certified. It goes through many of the "learning center" lessons with a quiz at the end of each one. If you pass the quiz you get a badge and if you do all of the lessons they mail you a certificate saying that you are Cyberwise Certified. So far I think that the course is free.