Watch these videos if you haven’t already.
Extra Credits : Making your first game : How to start game development
Extra Credits : Making your first game : Setting and keeping goals
Extra Credits : Making your first game : Minimum viable product
Extra Credits : Making your first game : How to market your game
[video]https://…/playlist?list=PLp6WHZp1xUXOlZeU2D4TG1LbpNjJYcCEl[/video]