@axios047, @envy7, It's wonderful to hear from you both. Please read our post Information for Interested GSoC Students for a few ideas on how to get started preparing for GSoC with Plone. Once you've had a chance to follow the ideas there, @ebrehault's suggestion to install and explore the plone.restapi package is a very good one.
We look forward to hearing more from you both, and to receiving your applications once the period for applying opens on March 20.