Answer
Really depends on what you want it for, how much you're willing to pay, how much you're going to ride and what's available in your area.
Suspension parts for mountainbikes do need regular servicing, so if you're heading that way, pick some brands that you know a local shop can work on.
I'll post a link to some bike reviews.
If you want to buy a cool mountain bike you should go check out: chainreactioncycles.They got a large choice of different mountain bikes in different coulors and models.
There are too many good mountain bikes to mention.
Sports shops are ideal.
Urah it's good
Mountain bike shoes are not required to be able to ride a mountain bike. You can wear any good athletic shoe. Wearing an actual mountain bike shoe is helpful however to keep your feet from slipping from the peddles on rugged terrian but it not required in any way.
One can buy a freeride mountain bike at local retailers such as Walmart, Target, Sears, AAFES, and the NEX. One can also purchase online at sites such as Amazon.
Easy now there is 2 mountain bike trails that are good for beginners in Aspen Colorado. One is to the east called " East Mountain Bike Trails for Beginners in Aspen Colorado". And the 2nd one is to the west called " West Mountain Bike Trails for Beginners in Aspen Colorado".
If you intend to buy a new bike you won't get anything "good" for that kind of money. Your best bet is to try to find a used bike in good condition instead. For those who knows what to look for, and don't insist on the latest models there are nice bargains available.
One can buy mountain bike shoes anywhere athletic gear is sold, such as Dick's Sporting Goods and Sports Authority. One would also do well to check Erik's Bike Shop and Penn Cycle, as those are shops devoted to bicycling.
A good race mountain bike would cost you about $6,000 to $10,000
One of George carlin's.adages was "I hope your parents never buy you a car." A life lesson in responsibility and self sustainability. Maybe you could ask yourself, "How can I make myself get a mountain bike." Oodiespruce
The best brands of mountain bikes are Schwinn, Mongoose, Diamondback and Giant. Most stores like Walmart, Target or Kmart sell them or of course a sporting good store.