Starting HTML

Step 1: Open Notepad (PC)
Windows 8 or later:

Open the Start Screen (the window symbol at the bottom left on your screen). Type Notepad.

Windows 7 or earlier:

Open Start > Programs > Accessories > Notepad

Step 1: Open TextEdit (Mac)
Open Finder > Applications > TextEdit

Also change some preferences to get the application to save files correctly. In Preferences > Format > choose "Plain Text"

Then under "Open and Save", check the box that says "Display HTML files as HTML code instead of formatted text".

Then open a new document to place the code.

Step 2: Write Some HTML

<!DOCTYPE html>
<html>
<body>

<h1>Hello</h1>

<p>My World.</p>

</body>
</html>

Step 3: Save the HTML
Example: 1st.html

Credits w3.school