I started developing skills in hacking, such as 1. automating creating accounts, 2. posting content on services in a way that makes the service be a file system, 3. cracking captchas, etc.

I'm not sure how to continue from here. I'm sure these skills might be helpful in some way, but I don't know what direction to take. Where do I learn more, how do I market those skills or make them useful for others?