A wise man once said you can be a touhou fan without playing the games but you cannot call yourself a fan without a fav yuri ship 🙂‍↕️ You can always watch gameplay (Most recommend EOSD/touhou 6 or touhou 7) or read game dialogue. Doujins are also a must to get into touhou!!! There’s like endless touhou content and it’s kinda built on fanmade projects so you shouldn’t have that much trouble!