How do you find communities by topic using the search bar?

Finding communities by topic is one of the most common starting points for new Reddit users, and the search bar is the primary discovery tool for this purpose. When you type a query into the global search bar and submit it, the results page opens to the Posts tab by default. To shift to community discovery, you need to click the **Communities** tab in the results navigation, which shows subreddits whose names, display names, or sidebar descriptions contain or relate to your search terms. Each result shows the community's name, member count, a brief description, and a Join button, giving you enough information to make a quick judgment. The more specific your search query, the more targeted your results tend to be. Searching for a broad term like "cooking" returns massive general communities alongside dozens of niche cooking subreddits focused on specific cuisines, diets, or skill levels. Searching for something more specific like "sourdough" or "fermentation" surfaces communities built specifically around those topics with smaller but more dedicated memberships. This distinction matters because the community that is right for a casual question may be very different from the one best suited to expert-level discussions. According to r/NewToReddit community guidance, once you find a community of interest, its sidebar frequently contains links to related or sister communities curated by the moderators — this chain-discovery method often turns up smaller niche communities that would never appear high in a search result because their membership is modest. The sidebar is effectively a human-curated recommendation engine built by people who already know the topic landscape well. Combining the search bar for initial discovery with sidebar exploration for depth is the most efficient approach to building out a subscription list around a particular area of interest. Additionally, visiting r/findareddit and posting a description of what you are looking for will prompt community members to suggest relevant subreddits they already know.