Wheelie:
Wheelie is a nice MTB or BMX trick.
The trick is basic and easy.
In the trick itself we lift the front wheel and pedal at the same time (ride on one wheel).
*Tip: I suggest for those of you that is their first time - do it on soft surface!!! and don't forget a helmet.
So... lets start
1.First Be in your lowest gear (it's easier in this gear) and Adjust your seat to a low position.
2. While you are standing or sitting (my opinion is that to stand it's the easier way) keep your feet on the pedals, and when you got Enough balance lift up your handlebar, and start pedalling fast at the same time (the pedalling help's you to lift up).
3. Then when you find your balance point you can sit on the seat (while pedalling)
4. When you want to stop you alow the front wheel to go down slowly and safely.
Here some videos that could help you
A MTB wheelie
And a BMX Wheelie