Easy to use and easy to configure.
1. Download latest version of module.
2. Make base settings of module, using Extensions - Module Manager.
3. Prepare one article per anniversary. Important! Change the creation date of article. For example, if you writing about your birthday and you was born in 12/03/1985 - point that date as a creation date.
4. Put all need articles specified category(s). 5. Remember IDs of category(s).
5. In the settings of the module point remembered IDs.
6. Publish module.