The back and forward icons will allow you to move backward and forward between sites you have already visited. If you continue to click the back icon it will take you to your first site. The back icon is the one with the left pointing arrow. The forward icon will move you in the opposite direction. These icons only go as far back and forward as you have gone.
Some people say that the Internet is like a huge public library with no card catalog.
The major search tools are search engines and directories. Search engines are computer programs that find things on the Internet for you. Think of them as librarians who give you a list of possible books to find out what you want to know, and then help you find the book. Search engines have different rules for how to enter the words you want searched. A directory is a list by category of subjects we can get.