Make sure you've saved your home page file in Notepad. Then go to File>Save As...You must give it a name for your first topic.
You can name it using 2 words, but then capitalize the first letter of each word, with no spaces!
Or you can name the files with one word, no capitals...
After the first green comment, type out the heading for your "page 1" topic, wrapping H2 tags around it.
Go down a couple lines and add P tags, opening and closing like this. Don't type in the paragraph yet, we'll do it later.
If you save it and look in the browser, it should look something like this...
You'll now have your second page open. Make the page heading match the file/page. Copy the topic inside the H2.
Repeat the process:
Change the H2 text to match the page's topic.
Repeat for the last topic/page.