There's obviously a need for this... I'd repectfully request this thread doesn't get drifted - please just post questions that get asked a lot and the answers.
Q: Do I have to go naked?
A: Hell no. Prepare to dress appropriate for the elements and according to your comfort level. If you want to go naked, half-naked, painted blue... go for it. Or not. It's what you wanna do.
Q: Do I have to go costumed?
A: Hell no. See above "Do I have to go naked?" A great many people seem to confuse being in costume with being a participant. They may call anyone not in cosutme names like "spectator". Fuck 'em. Please yourself in what you wear.
Q: What do I have to bring?
is a decent list to start with. A google search along the lines of "burning man list" will lead you to lots of home pages where people have lists of what they think is necessary and fun.
It's very important you read The Survival Guide.
Read that fucker twice. Read it until you know it. It CHANGES every year, you dig? So even if you read it last year you'll wanna read this years.
Q: Do I need a bike?
A: You will probably want one - the city is big- one that works but isn't a "good" bike because it'll get all kinds of messed up anyway. Lock it up if you don't want to lose it. Do NOT plan on leaving it there when you leave.
Q: Can I drive my car around during the event?
A: No. Park it at your camp. There is a provision for Art Cars - but they have to be cleared by the Department of Mutant Vehicles before the event now. Anything with a motor that you can sit your ass down on is now considered a car. Don't expect to bring a golf-cart, string x-mas lights on it and get to use it. The DMV and Rangers will impound any motorized vehicle that isn't a licensed Art Car.
Q: What is MOOP?
A: Matter Out Of Place and LNT is Leave No Trace. MOOP is anything that doesn't belong on the playa once we've got all our freaky selves off it. Glitter is moop, feathers are moop, nails, pistachio shells, CIGARETTE BUTTS, bicycles, grey water... whatever you bring in, make sure you have a plan for getting every last bit of it out. Don't bring costumes that shed (like feather boas or sequined outfits). Whatever *you* shed or drop or leave is something someone else is going to have to pick up. Therefore shedding or dropping or leaving it makes you suck. Don't suck. Pick up your own shit and pack it out.
It's all about the squirrels.