HTML Course Checklist

Created by Cheli

Step‑by‑step guide to learn and apply HTML fundamentals.

23 Items

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Published May 14, 2026

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Checklist Items (23)

Set Up Development Environment

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Install a code editor (e.g., VS Code)

Download from https://code.visualstudio.com/ and install extensions for HTML syntax highlighting.

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Install a modern browser for testing

Use Chrome or Firefox to render pages and access developer tools.

Learn HTML Basics

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Understand the basic document structure

Start with <!DOCTYPE html>, <html>, <head>, and <body> tags.

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Learn the purpose of DOCTYPE

DOCTYPE tells the browser which HTML version to use; always use <!DOCTYPE html> for HTML5.

Work with Text and Formatting Tags

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Use headings (h1-h6) to structure content

Headings create hierarchy; use only one h1 per page.

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Add paragraphs with <p>

Wrap blocks of text in <p> elements for semantic meaning.

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Apply emphasis with <strong> and <em>

<strong> indicates strong importance; <em> indicates stress emphasis.

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Insert block quotes and inline quotations

Use <blockquote> for longer quotes and <q> for short, inline quotations.

Create Lists and Links

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Build ordered (<ol>) and unordered (<ul>) lists

Use <li> for list items; choose ordered for steps, unordered for generic groups.

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Create description lists with <dl>, <dt>, <dd>

Ideal for terms and definitions, such as glossaries.

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Add hyperlinks using <a>

Set href attribute to target URL; use target="_blank" cautiously with rel="noopener".

Add Images and Multimedia

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Insert images with <img>

Provide src, alt text for accessibility, and width/height attributes.

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Embed audio and video using <audio> and <video>

Include controls attribute and multiple source formats for compatibility.

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Make media responsive with srcset and sizes

Use srcset to serve different resolutions based on device pixel ratio.

Build Forms

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Wrap form controls in <form>

Specify action (where to send data) and method (GET or POST).

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Use appropriate input types (text, email, password, etc.)

Choosing correct type improves validation and user experience.

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Label each input with <label>

Associate via for/id or wrap input inside label for accessibility.

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Add client‑side validation attributes

Use required, minlength, pattern, and type‑specific attributes for basic validation.

Use Semantic HTML and Accessibility

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Apply semantic sectioning elements

Use <header>, <nav>, <main>, <section>, <article>, <aside>, <footer> to define page structure.

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Add ARIA roles and properties when needed

Use roles like banner, navigation, main; prefer native semantics first.

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Ensure keyboard navigability and focus management

Make sure interactive elements are reachable via Tab and have visible focus indicators.

Test, Debug, and Publish Your HTML

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Validate markup with the W3C validator

Run your page through https://validator.w3.org/ to catch syntax errors.

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Deploy to a static hosting service

Upload files to GitHub Pages, Netlify, or Vercel for public access.

Public Checklist: HTML Course Checklist