HI i need help with these 5 questions. thanks a lot

1. Name the three different browsers and briefly describe how they work.
2. Name at least four services available on the Internet, among them may be e-mail, e-mail list servers, Internet Relay Chat (IRC), Usenet and the WorldWide Web (WWW) and describe their function.
3. Describe e-commerce as it pertains to retail selling and business-to-business.
4. Define tables, links, graphics, text as used in the development of a web page.
5. Define the four Internet marketing categories; communicating, selling, providing content and providing a network function.