Keep your comments relevant to the topic being discussed otherwise start your own separate discusson
Sometimes it's good to wait a while before posting. Eat a bit of food, take a nap or have a drink. Relax.
ie. No foul language or offensive comments, insults, that sort of thing.
Anyone berating or belittling newbies for asking simple or often repeated questions would be breaking this rule.
Plenty of places to talk about that stuff. It's not like people change their mind anyway.
Breaking the rules will likely result in removal of comment/discussion or a possible time out from participation in the forum or worse case an outright ban.