How can a 17 yr old start to ride motocross? ?

Go to a dealer and just find a bike that fits you comfortably, preferably a 4 stroke bike. Once you've found the right bike just ride it around in your yard on flat ground. Get the hang of shifting gears and using the front and back brakes and leaning to turn the bike. Then, once you've mastered this, visit your local track or find it on wheretomx.com, and ride with other people, this will make you a better rider. Ask the better guys there for advice and tips. Learning to jump is a big part of motocross. Start small, like a single jump. Learn how to stand up and handle the bike and throttle control when going over the jump, then move up to a small double. Soon you will be dedicated to one of the fastest growing sports in the US. As far as freestyle goes...you have a long way to go, but if you want it bad you will figure it out as you get more advanced on the bike. Also while you are at the dealer make sure you purchase all the proper riding gear, such as; helmet, gloves, goggles, boots. etc.. or find used stuff, makes it a lot more affordable!

Buy a cheap 4 stroke bike(around 200cc) and ride the hell out of it. Then after you master that move up to a better bike like a 125 2-stroke. The beater bike will probably see a few wrecks thats why it is a beater. Then start off on small jumps and work your way up to the big ones

Just like Jake said get a smaller 4 stroke. Learn the feel of the bike. What I am trying to say is don't be influenced by other riders, start off simple (Don't try to be Ricky C) I work as a medic at a track I've seen people that ride over there heads trust me it don't work. Be careful.

find a local track ( we drive as much as 2 hours) just go and watch. nothing says you cant race there are countles weekend racers that just go out for the love of the sport...you are never too old to start.... I met a guy who started riding in his 40s.... the next time you see a truck with abike in the bakc just ask where they ride...

You did not mention you height/weight. 4 stroke bikes are a lot easier to learn throttle control on. But depending on your size you do not want to get a bike that is too big. I started on a Honda XR100 it is a trail bike and very easy to learn on, but sucks for jumping(too heavy) I also do not know where you are but there are a lot of pros that do training courses to teach you. Usually if you contact a track near you they will be able to give you at least one person that gives lessons. Finally you are never too old to learn to ride, I got on a motorcycle for the first time at 43 and started racing last year..... I love it.

I got started when i was 1 yr old . Guest you just can do it whatever is how you want to do it .just be carefull in not trying to play stupid cause nobody pay for stuns when not one is paying for then . ***********