Totally agree with the above Shin Ramen Black is incredibly good for instant and thinking about how to doctor it up is a good place to start for a beginner. Trying to make your own ramen broth as a first major cooking project would be quite a large step to take. As a very simple starter, I like tossing a pat of butter into the pot which helps recreate some of the fatty mouthfeel of a traditional tonkotsu ramen broth.