Welcome aboard here! I'd recommend asking around and looking for a few local well-respected
delivery skippers and appeal to them to bring you on as crew for deliveries. (You might be surprised they are less interested in experience than in your ability to handle discomfort, your aversion to panic under stress and your teachability.) It can be a great way to learn the basics, to learn about different
boats, to learn about yourself at sea, to learn how to solve problems as they come up at any hour of the day, and to learn from a variety of experienced folks. Good luck!