In collaboration with SASTRA University, they offer an Open and Distance Learning (ODL) course specifically for Sanskrit and Divya Prabandham . Classes are typically held on weekends at their Kodambakkam premise but may be available online.
Chennai is dotted with Agraharams (traditional Brahmin quarters) and mutts. Here are the hubs where you can find authentic coaching:
Chennai has many "Prabandham teachers," but you need an Acharya . Here is a checklist: