Privet.

Help is on the navbar at the top of the page.
I also suggest looking around on the home page, there are additional links to the FAQ and the logs.
You can reach us on >>>/operate/ or on IRC, Discord, and Telegram (links on the home page navbar).
You could try lurking on the other Cyrillic boards, they might have some info about how things are here. You can find some of them on the board list.
Custom CSS can be added to the board to change it's look. If you have someone to write it, the Board Owner can add it.

Welcome to Endchan, enjoy your stay!