Rather than copy and paste, head over to another page to see how to upload and activate the zip file you’ll get from us. Once you’re done, come back here to learn how to use this plugin… we’ll wait.
Once uploaded and activated you should see a new button just to the right of the Add Media button on the post editing page. It should look like the image to the right.
If you’d rather link to external resources you can do so, either by clicking on the list of registered scripts or styles, or by typing the address into the box on the bottom.