If you're online—and reading this!—you've probably heard of Twitter. But just what is Twitter for? How does it work? And how do you get started using it? Whether you want to start using Twitter ...

Twitter's search button is hard to miss, whether you're using the app or website. It can be used to find another Twitter user or search for tweets that include a particular word, phrase, or hashtag.

Here are some tips for getting started. Some of them won't make sense until you are using the Web site, experimenting with it, looking at what it has to offer. If you can, immerse yourself in it for a ...