Hello and welcome to /jp/! Here's a newbie guide:
-/jp/ was always supposed to be about anything Japanese. Unfortunately, various janitors and /q/ faggots got the rules altered to turn it into their own personal playground. Hence why we have so many "shitposters" who want to talk about other things!
-Talking about anything other than Touhou is very risky. Every day, the janitors throw darts at a dartboard to determine what is on-topic here. Sometimes tea threads are allowed, sometimes they're not. Some days trains are allowed, others they're not. Posting on /jp/ is like walking through Detroit at night. Stay with the group or risk getting banned.
-If you want to post here, first you must determine whether or not you have a dynamic IP. Check out your IP on a whatsmyip site. Reset your router/modem and wait a short while. Check your IP again. If it's the same IP, you might have a static IP, in which case don't even bother posting here. If it's different, you have a dynamic IP. It's important to know how to change your IP in case you accidentally violate one of the esoteric rules, like "posting a light novel that has received an animated adaptation."
-/q/ was created because moot was tired of having his inbox flooded by /jp/sies. /q/ was deleted because moot was tired of having his janitors publicly ridiculed on /q/ by /jp/sies.
-The generally preferred archive is at fuuka.warosu.org. Foolz also has one. Both of these archives sprung up after the old one, easymodo, was taken down.
Enjoy your time here and take it easy!