The document provides information about the internet and how it works. It explains that every computer on the internet has a unique IP address made up of four numbers between 0 and 255. It then describes the world wide web as a system of interlinked hypertext documents that are accessed via the internet using a web browser. URLs are used to identify each web address and contain parts like the web address and page location. The document outlines several common uses of the internet like email, news, file transfers, online services, and social media. It also discusses search engines and how to perform searches effectively.

1. Learn what is Internet and use it efficiently

2. By Jeewanthi Hettiarachchi

4. • In order to communicate across the Internet,
a computer must have a unique address.
• Every computer on the Internet has a unique
numeric identifier, called an Internet Protocol
(IP) address.
• Each IP address has four parts – each part a
number between 0 and 255. This system,
known as Internet Protocol Version 4 (IPv4)
• Eg - 205.46.117.104
By Jeewanthi Hettiarachchi

5. • The World Wide Web
• Electronic Mail
• News
• File Transfer Protocol (FTP)
• Internet Relay Chat (IRC)
• Online Services
By Jeewanthi Hettiarachchi

6. WWW is a system of
interlinked hypertext
documents accessed via
the Internet. With a web
browser, one can view web
pages that may contain
text, images, videos, and
other multimedia and
navigate between them via
hyperlinks.
"Tim" Berners-Lee the inventor
of the World Wide Web

7. By Jeewanthi Hettiarachchi

8. • To Identify each web address it has a Web
Address
• Normally when we type the web address on
the address bar it will displayed the Home
page of the Website.
www.bpu.ac.lk
By Jeewanthi Hettiarachchi

9. • URL (Uniform Resource Locater)
– Is a just another name for a web address
– It mainly contain of following Parts
By Jeewanthi Hettiarachchi

10. http://www.bpu.ac.lk/postgraduate-degrees-
and-external-examination-results

11. Is
Internet
and
WWW (World Wide Web)
are in same category ?
By Jeewanthi Hettiarachchi

12. • Launch the Web browser
• Navigate the Web
– Using URL’s
– Using Hyperlinks
– Using browser navigation tools
• Back , Forward , Home, favorites
• Close the Web browser
By Jeewanthi Hettiarachchi

13. • Exchanging electronic mail (E-mail) –
– http://www.mail.yahoo.com,
http://www.gmail.com
• Accessing new information about Local & Foreign
news, University Details, Journals & Articles,
Weather Forecast, Transport, Money exchange,
Share Market etc.. –
– http://www. lankatruth.com
– http://www. cnn.com
– http://www. adaderana.lk
• Accessing multimedia information that includes
sound, photographic images and even video
– http://www. ananmanan.com,
http://www.elakiri.com, http://www.music.lk
• Requesting and providing assistance with problems
and questions
– http://www.laksuwa.com By Jeewanthi Hettiarachchi

14. • Community Websites
– http://www.facebook.com, http://www.hi5.com
• Marketing and selling products and services
– http://www.lankaland.lk, http://www.automart.lk,
• Ordering products
– http://www.lanka.info(Kapruka),
http://www.lankafood.com/
• Participating in interactive forums where users post
and respond to public messages, and even join
"chats," in which you and other users type messages
that are received by the chat participants instantly.
– http://www.wow.lk
• Playing games
– http://www.popcap.com, http://www.miniclip.com
By Jeewanthi Hettiarachchi

15. • Search Engines –Let you search for
information by typing one or many words
– http://www.google.com
– http://www.yahoo.com
– http://www.msn.com – bing
– http://www.altavista.com
– http://www.lycos.com
By Jeewanthi Hettiarachchi

16.  Search strategies
◦ Keep it simple: Make your searches brief by focusing on
keywords, then keep the number of these keywords to a
minimum. This way, you're more likely to get relevant
results.
◦ Consider suggestions: As you enter your term, search
engines will suggest the most popular results involving
the term so don't be afraid to select one, as they can
often give you plenty of new ideas.
◦ Use natural language: You don't have to use complicated
words or phrases to get results. Search engines can
recognize the language you naturally use in your
everyday life, so feel free to try whatever comes to mind.

17.  Near me

18.  Math and geometry calculators

19.  Conversions

20.  Definitions and translations

21.  Weather

22.  Distance between places

23.  Distance between places

24. How to create work with an Email

28.  Productivity tools: Email is usually packaged with a calendar, address book,
instant messaging, and more for convenience and productivity.
 Access to web services: If you want to sign up for an account like Facebook or
order products from services like Amazon, you will need an email address so you
can be safely identified and contacted.
 Easy mail management: Email service providers have tools that allow you to file,
label, prioritize, find, group, and filter your emails for easy management. You can
even easily control spam, or junk email.
 Privacy: Your email is delivered to your own personal and private account with a
password required to access and view emails.
 Communication with multiple people: You can send an email to multiple people at
once, giving you the option to include as few as or as many people as you want in
a conversation.
 Accessible anywhere at any time: You don’t have to be at home to get your mail.
You can access it from any computer or mobile device that has an Internet
connection.

29.  Email addresses are always written in a
standard format that includes a user name,
the @ (at) symbol, and the email provider's
domain.
jeewanthihe@gmail.com
jeewanthi@bpu.ac.lk

30. Web
Email
Providers