In WordPress parlance, a Sticky Post is a Post that will stay at the top of the front page or depending on the theme will be featured prominently.
There are 2 ways to do this.
Create Sticky Post – Alternative 1
After you have created a Post go to the righthand subpanel called “Publish” and click the Visibility “Edit” link.
Check “Stick this post to the front page”. Then click “OK”.
Don’t forget to then click the “Publish” or “Update” button to save the entry.
Create a Sticky Post – Alternative 2
Go to the lists of Posts by clicking Posts in the Posts subpanel.
Place your cursor over a Post and a few links will appear. Click “Quick Edit”
Check “Make this post sticky” then click the “Update” button.
You can also use “Quick Edit” to change other options. It is very handy for quick editing (and thus its name).
And that’s it.