Online is the term for being connected to another computer, where the data you are reading can be modified. You are not online when you are using a non-networked computer for word processing or reading a CD-ROM. The term online means that the computer you are using is communicating with another computer, for example, to connect to the Internet, or to access a library's regularly updated catalog and other resources.
To get online, you must logon (type a password, or go through certain prescribed steps, depending on the system). To go offline, you logoff (by typing certain words or symbols).
The Internet is the name given to the network of all the computers in the world that can communicate with each other. The most common means of connection is a modem (an electronic device in each computer that uses the telephone lines to transmit the data between computers), but some systems use cable or satellites.
Some of the computers on the Internet contain huge storehouses of information organized for easy public retrieval. Others provide the interconnections for networks of personal computers (such as a university mainframe computer or America on Line). Still other computers on the Internet provide information from businesses, government agencies, or non-profit organizations. Connecting to the Internet allows you access to libraries and museums, computer software, elaborate graphics--and ads for products you may or may not want. Further, you can reach thoughtful and generous people who will respond to your questions or entertain you. And unfortunately, you may also encounter people who give misinformation or waste your time.
Via the Internet, you have access to all these resources--almost all of them for free. The challenge is to figure out which ones you want to connect to and how to do so efficiently. Once connected, you'll find some of the information presented in simple text format (plain black typeface on an unadorned screen), but you'll also find some valuable information festooned with colorful and entertaining artwork (including commercials), sound effects, video and music.
Occasionally, you'll be asked to register--giving your real name, address, and e-mail address. You will be