This module provides a very simple caption input filter that can be used to attach captions to an image or embeddable object. Similar to the WordPress caption shorthand, the filter came for the need to provide a simple method to attach captions to images for a variety of non-technical bloggers migrating from WordPress to Drupal.
There are two methods to create a caption:
1) [caption]<img src="" alt="" />This is an image caption[/caption]
2) [caption align=right]<img src="" alt="" />This is a right aligned caption[/caption]
You can also watch this helpful tutorial video to get you started.