Play original games from Pro Ant Games. Every game is designed and programmed by one very busy man, so we're not talking about huge fantasy MMORPGs with upcoming DLCs.
Find inspiration from history. Read about the goals, controls and a take on takeaways from each game.
Learn how to go about designing games and controlling the process while you do. Learn about how to perform a good idea generation process, and how to control the design- and development process.