You create excerpts of your posts and add a “More…” link, which allows your site visitors to click if they want to read the whole post.
In your admin area click Posts > Add New. To add the “More…” link to the post, click the Insert more tag button in the WYSIWYG editor menu above the message body.
If you prefer writing in HTML, you can use the tag instead. It should be added after the text of your post.
Create your summary in the Excerpt field.
Click Publish to save and publish your new post.