I'm getting ready to read through National Geographic's Travel Guide to Japan this week. There are plenty of Japanese people on youtube, and people living there that talk about Holidays, events, and the like. Japanesepod101 has quite a few videos on those subjects too, both here on their website and youtube channel.
I also really enjoyed Tales of Old Japan by Mitford, which is an introduction to classic Japanese stories, and culture, as well as extra notes from the author and his own personal accounts. It's from 1871, so you might need to use a dictionary as a companion at points for some of the older, out of use words. It's worth reading at least once.