"How do I become an entrepreneur and where do I start?"
Begin by asking yourself "Why do you want to become an entrepreneur?" After listing all the reasons and assuming you are honest with yourself, there will be a solution that does not require entrepreneurship to meet the criteria. Explore that first.
Assuming the career of an entrepreneur is right for you, continue by understanding the right direction with these questions:
1) What are you truly passionate about?
This matters as entrepreneurship will present innumerable unforeseen challenges. Enjoying what you do provides the necessary momentum to advance when external circumstances may suggest you yield.
2) What is your risk tolerance as it relates to your values in pursuing entrepreneurship?
This matters as taking risk beyond what you are comfortable with can result in triggering your survival decision making. This results in making decisions that forgo long-term benefits for short-term gains. I have found this particularly true in the circumstance where people quit their jobs and rely on their savings pursuing the life of an entrepreneur. This puts you on a timer since money eventually runs out (also known as a burn rate). Some people can handle that, usually those people don't have children such as in my case with my first business.
3) What resources are at your disposal?
This applies to money, time and people. Know what you have to work with in assessing immediate action.
Once you ask the above, then the next step is to learn about how your passion can be translated into value. Let go of expectation in terms of what you think this needs to look like. With pivots, most businesses are scalable. The key is to understand that for you to be in a position to scale your business, the concept, implementation and optimization of what you offer requires your understanding first. From there, you can translate that understanding into a solution for others. This can take on the forms of a service, software, training, content etc.
Learn how to think, remain open to learn and willing to do whatever it takes to succeed. You can do it.