Welcome to SpellCard.org! This is a place where Touhou fans can just hang out and relax. The concept for this site originally came about because I really hated how Facebook Groups were, and wanted something new.
As for how to use the site, just try making a post or two and you'll figure it out I'm sure.
The only rule is: Use common sense. Whining and trolling will only get your posts downvoted and flagged, and lead to post deletion or worse.
Other than that, have fun!