Worried about being sued for something you posted online? You may need to educate yourself about the risks.
American citizens may want to understand the context of online defamation by buying Be Careful Who You SLAPP by Delfino and Day. To learn about strategic lawsuits designed to silence people in the USA, there is no better book than SLAPPs: Being Sued for Speaking Out by Rock Pring. For British citizens or those interested with English law, you may want to buy a copy of The Law of Defamation and the Internet. It is best to be prepared!
To learn more about the law in general, we recommend a Nolo book.