I always Googled it. Depending on the problem, that eventually taught me that it's sometimes best to just check the docs first. Now my method is to check the docs first. If I want more information and it's on GitHub then I search for issues. I have learned a ton from reading GitHub issue threads, some of the best and brightest developers explain their thought processes for figuring out these problems and I get to learn from them for free!

I've been using this style of organizing my Redux code ever since I started using React about a year ago, so I don't have a perspective from both sides but it has treated me very well so far. I work for an agency, our projects are typically only a few months long so maybe I haven't run across the issues that come with a massive application using this approach. I say go for it and split things up if they get too overwhelming.