#1. Don’t answer questions to which you don’t know the answer
#2. Explain yourself
#3. Give as little assistance as necessary
#4. Show your workings
#5. Use humour judiciously
#6. If you can’t say something nice don’t say anything at all
#7. Avoid jargon, baffling acronyms and idiolects
#8. Never never never just respond with RTFM. Not ever.
#9. Meditate on eternity
#10. Keep your newbie mind
Refences Used : How To Be A Good Guru post by APC