Welcome to the Community!
If you are looking to join the Shopify Partner program to learn how to develop themes and apps, then I would recommend signing up for our free course here. The course will provide you with the tools you need to learn more about how to create themes and apps within the Shopify ecosystem; however, does require a working knowledge of different program languages.
You can also learn more about the Shopify Partner program through our FAQ,
Let me know if if you have any specific questions about the program!