Basic Overview
<button type="button" class="btn btn-primary" data-toggle="popover" title="Popover title" data-content="And here's some amazing content. It's very engaging. Right?"> ...</button>
Directions
<button type="button" class="btn btn-secondary" data-container="body" data-toggle="popover" data-placement="top" data-content="Vivamus sagittis lacus vel augue laoreet rutrum faucibus."> ...</button>
AttrKeys
data-placement="*"top | right | bottom | left