http://nksecur5aoxbew7x4t2jebk7ordomil3a4xubeamno76zexicppwhiad.onion/advanced-security-guide.html
If you make a serious mistake, ask the staff what to do and if they can erase it. You might be lucky if it is fixed quickly by trustworthy staff. If you are somehow arrested. Don’t surrender your passwords and PGP keys unless the alternative is worse.