1. The “the_content” and “the_excerpt” are found in your theme’s home or index files. Like me, you have no access to those files. We are both using free WordPress.com-hosted blogs. The ability to edit the theme’s files is available to self-hosted WordPress blogs like this.

2. The “more” / “Insert More” tag button is located with the other buttons in your Add New or Edit Post box. It is the 4th button from the right.

When adding a new post or editing an existing post, position your cursor on the exact location where you want your post to be split, then press the “more” button (HTML) or “Insert More” button (Visual).

In the post which I am using here as an example, Public education, ACMA, and anti-spamming, I inserted the “more” tag at the end of the third paragraph.

On the homepage of this blog, the whole post is not displayed. Only the first three paragraphs are displayed. You also see the “Read more” link which when clicked will show the whole post.

You can show the excerpt, instead of the whole post, by changing the “the_content” code to “the_excerpt” in your theme’s home or main index file. Or you can install a plugin which will automatically split your to your preference. This is available to self-hosted WordPress blogs. With a WordPress.com-hosted blog however, you will not be able to do that (see my post on “How to customise your blog using the widget”), unless you have access to your theme’s files.

Whether you have a self-hosted WordPress blog or WP.com-hosted blog, you can still split your post by firstly, positioning your cursor on the exact location where you want to split your post and then press the “Insert More tag” button in Visual or “more” button in HTML editing mode.

I don’t normally split my post, but I split my “Public education, ACMA and anti-spamming” post as a demo.

Hope this helps.