I might first suggest looking into a magazine/community that you're interested in. Scrolling the microblog section of that magazine might lend some insight on which keywords appear the most frequently or resonate the most with you. Pick one out, then try clicking on it or searching it with either the built in search function in the navigation bar at the top, or by checking out https://kbin.social/tag/cats as an example. Maybe even explore https://kbin.social/tag/hashtag. By replacing the tag in those links, you can check out posts containing tags with a bit more freedom, as some of the federation issues can be mitigated by searching this way. Trying to use some of these hashtags to find out specific information regarding questions or other interests, perhaps. If you have any further questions, you're free to reach out again.