- Walking. Walking is slow, but it's the best way to fully experience the city. On foot you're completely free to go wherever your whims take you, and you can devote your full attention to seeing what's around you.
- Mutant vehicle. You should make a point of riding at least one mutant vehicle / art car. It's a wildly impractical but immensely fun way to go somewhere, meet some interesting people, and surrender to the will of the playa.
- Bike. Bikes are the most practical way to get around BRC. If you're in one place, and you want to be in a different place as soon as possible, a bike is the way to go. You may find, though, that the streets are crowded enough that you spend most of your time focusing on collision avoidance. Bikes are practical, but they aren't a good way to go sightseeing.
Choosing a bike
The playa is hard on bikes. You should choose the cheapest, simplest bike that works reliably. The ideal bike is probably a cheap beach cruiser with fat tires that won't sink into the sand, no gear shifters, and pedal brakes.
Preparing your bike
From a practical perspective, preparing your bike is easy: if it works at home, it'll work just fine on the playa. If your bike doesn't already have a kick stand, you may want to add one: it's often hard to find an empty bike rack.
Just like at home, lights are absolutely mandatory if you're riding at night (which you will be). You can use standard bike lights, or go for a more elaborate and artistic solution. Many people use El-wire to decorate their bikes. One handy solution is to mount a flashlight holder on your handlebars. That way, you can use a single flashlight whether you're on foot or on your bike.
Burning Man isn't just about practicality, however. A plain, undecorated bike is an eyesore and a civic blight. At the very least, take the time to spray paint your bike an interesting color. Even better, take the time to do something really visually interesting with it.
Securing your bike
Bike theft is a significant issue on the playa. You should keep your bike locked at all times to avoid having it "borrowed" by a clueless person without a bike of their own. Pretty much any lock will do, but you may find it convenient to use a combination lock, so that you don't have to carry a key with you.
Tools and spare parts
You don't really need to carry a lot of bike tools with you: if your bike dies while you're out and about, you can just walk it back to camp to fix it. You should bring a spare inner tube for your bike, and possibly a spare tire as well. At a minimum, each camp should have a good set of basic bike tools and a good air pump.