What should I know, now that I'm here?

Hi there and welcome!
Don't be discouraged if some people seem/are rude around here.
Use the Search function in the top right corner before you ask a question.
Check MOTHER in the top right corner for Modding and Installation Guides and so much more.
Enjoy your stay! 

You're making a dad joke that says "we are old" but the action of making dad joke itself carries the same message already.
And now I'm explaining it! It's the Department of Redundancy Department all over again.