Words of Wisdom for those new to gaming

To a new PLAYER not a new DM, eh?

Try to say "yes" to opportunities.
They're laughing with you, not at you. Seriously, they're excited for you to have fun and excited at the opportunity to introduce someone new to their hobby.
However tempting it might be to stay quiet, speak up once each time you encounter a new person, place, or event.
It's completely acceptable to think about how comfortable and fashionable your character is. MW armor IS like a new suit; a magical Handy Haversack IS like the best purse ever. DMs will recognize that it's a sign that you're getting into the spirit of their world.
Try to understand the motivations of your fellow PLAYERS as much as your fellow characters.
It's okay to say, "I don't understand." Players do it all the time.