Hi @hilash ,
the plugin is pretty simple and self-explanatory so you don’t need a documentation for use it. Just activate it, go to the setting page and choose where to activate the auto-link engine, choose if you want tooltips or not and the template you want for them.
Start creating your glossary terms like you create a normal post or page and choose if you want link them also to different terms from the title (related). It’s pretty simple and straight forward and you can see a demo here: https://codeat.co/glossary/glossary/
We are plannig to write a little documentation in some weeks but at moment you can ask to us everything specific you need opening another support ticket here or on github.