Pre-Requirements

1. Install and enable Core Design Scriptegrator plugin.

First & Easy

1. Install the plugin.
2. Also publish the plugin.

How do I create a glossary database?

Do you know how to create a Joomla! category or article? That's all knowledge you actually need.

1. Create a new category - for example called "My Glossary".
2. Each glossary item is presented as an individual article. So let's create a new article inside "My Glossary" category called "Commercial website". New article means also new glossary item.
   Article title will be searched in your aticle to display the tooltip. Article text will be displayed on content in popup window.
3. Save the article.
4. Visit Glossary plugin configuration and click on the "Extension - Joomla! Articles" panel. There is option called "Glossary terms". Just choose "My Glossary" category and save plugin configuration.
   
   

I wanna apply glossary searching on specified category. Is that possible?

You can select your categories in "Enable In" option in Glossary plugin configuration:

How to disable glossary on specified article?

Open the article and put {!glossary} string anywhere in the article.

{!glossary}

I've more aliases for one glossary item but I don't want to create a new item

You created glossary item called "ZIP file format" but you want to have also "ZIP" alias available. Well old fashion way you can create a new article with the same file content as contains the "ZIP file format" article.

Or you can open "ZIP file format" article and put the following string to the glossary article (doesn't matter where):

{aliases ZIP}
or
{aliases ZIP|ZIP file|ZIP format}