There are a couple ways you can add topics to a question:
- When adding a new question, one of the steps is topic selection. As you go through the process, Quora will suggest topics to add to the question. You can select from these, as well as search for and add other topics.
- Once a question is added to Quora, you can add topics by going to that question, and clicking on the link that says "Edit Topics." This link is below the list of topics on the left-hand side of the page.