Stacks of books are routine for civil services aspirants, but for Sreenath K, a coolie who cleared the written test of the Kerala Public Service Commission, the phone and earphones are his lifeline as he studies while going about his job. Sreenath has been working as a porter at Kerala's Ernakulam station for the past five years. Deftly balancing heavy luggage on his shoulders, he listens to his digital coursework, his teachers speaking into his earpieces.