The internet is a global network connecting billions of computers. The World Wide Web (WWW) is a system of web pages accessed through browsers. This topic covers how the internet works, web browsing, searching, and email basics.
Internet: a worldwide network of computers, started as ARPANET (1969). WWW: invented by Tim Berners-Lee (1989) — a collection of web pages linked by hyperlinks. Browser: software to view web pages (Chrome, Firefox, Edge, Safari). URL (Uniform Resource Locator): the address of a web page (e.g., https://www.example.com). HTTP/HTTPS: protocols for transferring web pages (S = Secure).
Search engines: Google, Bing — type keywords to find information. Tips: use specific words, put phrases in quotes. Email: sending messages electronically. Parts: To, CC (carbon copy), BCC (blind), Subject, Body, Attachments. Email etiquette: clear subject lines, polite language, check before sending.
HTTP (HyperText Transfer Protocol) transfers web data without encryption — anyone could intercept it. HTTPS adds SSL/TLS encryption, making data secure. You can see a padlock icon in the browser for HTTPS sites. Always prefer HTTPS, especially for banking, shopping, or entering passwords.
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