a simple question I'm posting you as newbie.
What is parsys in AEM and does it mean in terms of developing.
Parsys is a layout container, it is the minimal requirement for adding components to your page by author.
We have two more layout containers namely iParsys and responsivegrid
Please review these links:
AEM Components - The Basics
AEM Development - Guidelines and Best Practices
As you are a new AEM Developer (I assume you are a developer) - you should go here and complete this:
Getting Started with AEM Sites - WKND Tutorial
This will get you up and running in AEM.