Connect with other players and make friends! Being courteous in group content can help you and your teammates have the best time possible. Sending a friendly hello message can help set your group up for success.
Play as a team with your fellow players - whether in dungeons, raids, battlegrounds, arenas, or out questing in the world. Do your best to support your team through your communication and behaviors so that you can all celebrate your success together.
Assist other players that you encounter in the world. Maybe they need some help defeating a tough monster, or maybe they could use a little healing!
Help answer questions others have in chat channels like General or Trade. We were all newbies once - one person offering some help can go a long way!
You know what's funny and ironic about these 4 points?
It's that both Blizzard and the community, over the years, have been responsible for taking the game in the opposite direction of the sentiment these points are trying to encourage.