Course Content
ICDL Complete Course

Module 2 – Online Essentials

Lesson 1 – Web Browsing Basics

The internet is a global network that connects millions of devices. A web browser allows you to
access information, communicate, search, shop, study and work online. This lesson introduces
the core concepts of web browsing and how to use a browser safely and effectively.

Learning outcomes

By the end of this lesson, you should be able to:

  • Explain what the internet is and what it is used for.
  • Identify common web browsers and key parts of the browser window.
  • Use tabs, the address bar and navigation buttons correctly.
  • Use a search engine to find information online.
  • Download files safely and recognise basic web security features (HTTPS, padlock).
  • Manage history, cookies and private browsing at a basic level.

1. What is the internet?

The internet is a worldwide network of connected computers. It allows you to:

  • View websites and online services
  • Stream videos and music
  • Use email and messaging
  • Search for information
  • Download files and software
  • Shop, bank and work online

Computer Network Diagrams Solution | ConceptDraw

Try it now

Think of three different things you did online in the last week. Which category do they fit into?

  • Communication
  • Entertainment
  • Work / Study
  • Shopping / Banking

2. What is a web browser?

A browser is a program used to access the internet. Popular browsers include:

  • Google Chrome
  • Microsoft Edge
  • Mozilla Firefox
  • Safari (Apple devices)

A modern browser lets you:

  • Open multiple tabs
  • Bookmark websites
  • View downloads
  • Use private browsing (Incognito)
  • Manage history, cookies and extensions
  • Use built-in tools such as pop-up blockers and password managers

Web Basics

Quick check: Browser or not?

Which of these are web browsers?

  • Google Chrome
  • Microsoft Word
  • Mozilla Firefox
  • Spotify

Answer: Chrome and Firefox are browsers. Word and Spotify are applications, not browsers.

3. Website addresses (URLs)

A web address (URL) tells the browser where to go.

Example: https://www.example.com/page

Breakdown of parts:

  • https:// – secure connection
  • www.example.com – domain name
  • /page – specific webpage

Mini activity

Look at a website you use often (for example your email or an online shop).
Write down its URL and identify:

  • The protocol (http or https)
  • The domain name
  • Any extra path at the end (for example /login or /products)

4. Basic browser navigation

Understanding browser icons is essential:

  • Back – return to the previous page
  • Forward – go forward again after going back
  • Refresh – reload a page
  • Home – return to your homepage
  • Address bar – type website addresses or search terms
  • Tabs – open multiple pages at once

Insert Image: Diagram of browser navigation buttons

Self-check: Which button?

Which control would you use to do each of these?

  • Reload a page that didn’t load properly.
  • Go back to the last page you visited.
  • Open a new website without closing the current one.

Answers:

  • Reload: Refresh button.
  • Last page: Back button.
  • New website: open a new tab, then use the address bar.

5. Tabs and windows

Tabs let you open several webpages at the same time.

  • New Tab – opens a new page
  • Close Tab – closes the current page
  • New Window – opens a separate browser window
  • Incognito/Private Window – prevents saving of history and cookies on that device

Try it now

  1. Open your browser.
  2. Create two new tabs.
  3. Open a different website in each tab.
  4. Switch between tabs and then close just one tab.

6. Using search engines (ICDL requirement)

Search engines help you find information online.

  • Examples: Google, Bing, DuckDuckGo
  • Use keywords rather than full sentences
  • Use quotation marks for exact phrases (“climate change report”)
  • Use filters to refine results (Images, Videos, News, Dates)
Quick search challenge

Rewrite this as good search terms:

“How do I find bus times from London to Oxford tomorrow?”

Example keywords: London Oxford bus times or London to Oxford bus timetable

7. Downloading files

Examples of downloadable files:

  • PDF documents
  • Images
  • Software installers
  • Spreadsheets

Safe downloading practices:

  • Only download from trusted websites
  • Check the file type before downloading
  • Avoid pirated content
  • Scan downloaded files using antivirus

Scenario

You search for “free video editor” and see many download links on unfamiliar websites.
What should you do?

  • Look for well-known, trusted sites or official developer pages.
  • Avoid sites filled with pop-ups or “Download Now!” adverts.
  • Scan the downloaded file with antivirus before opening.

8. Browser history and privacy

Browser history stores a record of the websites you have visited.

  • History – view previously visited pages
  • Clear browsing data – removes history, cookies and cache
  • Private browsing – does not store history or cookies on that device

Clearing history:

  • Improves privacy
  • Can fix loading or display issues
  • May remove stored passwords if chosen

9. Cookies

Cookies store small pieces of information about your visit.

  • Essential cookies – required for the site to work
  • Functional cookies – remember preferences
  • Tracking cookies – used for advertising and analytics

Users can:

  • Accept or reject cookie categories
  • Clear cookies in browser settings
  • Use private browsing to reduce tracking
Check your understanding: Cookies

True or false?

  1. Cookies are always dangerous and should never be accepted.
  2. You can delete cookies from your browser settings.
  3. Some websites will not work properly if you block all cookies.

Answers:

  1. False – many cookies are essential; tracking cookies are the main concern.
  2. True.
  3. True.

10. Web safety basics

  • Look for HTTPS and the padlock symbol
  • Avoid clicking unknown or suspicious links
  • Do not enter personal details on unsafe websites
  • Avoid unusual pop-ups asking for information
  • Keep your browser updated for maximum security

Domain security padlock icon. HTTPS and HTTP network privacy status ...

Scenario: Is this website safe?

You receive an email saying your bank account will be closed unless you click a link and
log in immediately. The link opens a site without https and the design looks slightly different.

What should you do?

  • Do not enter any details.
  • Close the page.
  • Access your bank by typing the address manually or using your saved bookmark.
  • Contact the bank using an official phone number or app if you are unsure.

11. Practical Activity

  • Open a browser and navigate to three different websites.
  • Open and close multiple tabs.
  • Add two bookmarks to your favourites bar.
  • Clear your browser’s history and cookies.
  • Find the HTTPS padlock and view the certificate on a secure site.
  • Use a search engine to find a specific document or image.