Welcome to Hive! Reddit-like communities are just one dimension to Hive. Another important aspect is the tags, they work not as a search helping feature but more as a help to gather together content on the same topic. It took me around 3months to understand the culture and mechanics working here, but after 3years from time to time it happens, I learn something new here! Just explore, freely ask questions and have fun, this place is more about community than earning, however, author rewards are a nice addition. Most importantly, post your own content, don't spam, try to deliver good quality content, and try to use proper tags and communities.