The Internet and the telephone system are similar--you can connect a computer to the Internet much like you connect a phone to the telephone system. Once you are on the Internet, your computer becomes an extension of what seems like a giant computer--a computer that branches all over the world. When provided with a connection to the Internet, you can use a browser program to search the
Web.

Internet service providers are connected to the Internet,providing a path for individuals to access the Internet.Connection technologies include DSL,cable,and wireless modems.

Browsers access the Web allowing you to surf or explore.
URLs--locations or addresses to Web resources;two parts are protocol and domain name;top-level domain(TLD)identifies type of organizarion.
HTML--commands to display Web pages; hyperlinks(links) are connections.
javascript--a scripting language that adds basic interactivity and form checking to Web pages. AJAX allows rapid response time.
applets--special programs linked to Web pages;typically written in Java.
Mobile browsers--run on portable devices;display on very small screens;provide special navigational tools.