This one is for who have an idea and want to make their idea reality. The purpose for this framework is to help you to think better and clear. This will help you communicate your idea to everyone. Also, if you are just starting up, don't overdo documentation. It will make you end up just doing planning and not implementation. Don't get stuck if you don't know the answers, write whatever you know and then improve on it over the time.
Try to think and write things as the order set below. It's not a strict rule but just a guideline.