Know these techie terms:

Domain - The part of the Internet address that specifies your computer’s location in the world. The address is written as a series of names separated by full stops.
E-commerce - Performing business transactions on the Internet - which may include the use of credit cards, ’shopping trolleys’, forms, and secure servers.
Email - Allows users to send and receive messages to each other over the Internet.
Email address - A code representing a unique email user on the Internet.
Firewall - A security system, usually for networked computers, which controls access in and out of the network.
Hacker - A computer user who illegally visits networked computers to look around or cause harm.
HTTP - HyperText Transfer Protocol: The protocol used to provide hypertext links between pages. It is the standard way of transferring HTML documents between Web servers and browsers.
Plug-in - An extra bit of software which has to be added to a Web browser before a certain type of file can be viewed. Recent browsers come with the most popular plug-ins pre-installed.
Spam - Slang for posting the same message to multiple newsgroups - frowned on by most people on the Internet.
URL - Uniform Resource Locater. This is the (rather clumsy) name for the address of any resource on the Internet. You type the URL into your browser, and are taken to that address.