How do I get familiar with the tools of Web 2.0?

Here are some Museum 2.0 blog posts that address this question:

• Blogging - finding the right strategy for your museum
  
• Twitter - part 1 on potential uses, part 2 on why it might make sense for you
  
• Flickr - why it's useful, and an example from the Library the Congress
• Wikis - when and how they work
  
• Voicethread - what it is, and examples for presentation preparation and exhibition planning
• Virtual Worlds (including Second Life and Club Penguin) - several posts here
  
• Google Homepage - how to set up a feed-rich personal homepage
• Digg - what is it?
  
• Museum-run social networks - an example at the Indianapolis Children's Museum 

Other resources that are very useful:

• Beth Kanter's blog on how non-profits can use social media
• The NTEN WeAreMedia project to create a social media starter kit for non-profits