This isn't a social networking site. Following a specific user is the wrong solution (and a little bit creepy).
Instead, set up some favorite tags and follow those instead. The home page is incredibly adaptive and automatically shows you questions that you are most likely interested in, based on those favorite tags and your recent activity.
You can also browse all of the questions related to a specific tag. Clicking on the tag anywhere on the site will automatically take you to a page listing all of the questions containing that tag. If you want to take this to the next level, you can conduct searches for questions containing multiple tags, providing even more assurance that the matching questions will line up with your specific interests. For example, you might search for questions with these tags:
This is one of the many things that tags were made for, and this method has the additional benefit of ensuring that you don't miss an interesting and education question that you might find relevant just because it was asked by a user for whom you haven't personally fetishized.