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An absolute basic move, the start of everything.

The backhop is the most basic move you need in trials riding, once you have that, it is quite easy to extend your skills to a few hops on the back wheel, before you can hop your way on the back wheel in any direction...
It is also a similar move that you'll need when launching a bunny hop or to climb sideways...So it's really hardcore basics.

Three phases smoothed in one move
1° Start from a stand still, brakes full-on, shift your weight on the back wheel. 2° Lift the front wheel and push on the legs to jump, extending the arms before lifting the bike. 3° When the back wheel takes off, pull your knees upwards and carry on lifting the bars.
4° After that, gravity pulls you back to earth, nothing special. Try to land on the back wheel first, it's smoother.
See the move in an animated gif

You can practice the backhop just anywhere on flat land or from small kerbs sideways.

The next step is to Bunny Hop over something. For the bunny hop, exaclty the same move except that you don't use the brakes. Do it at any speed you like. See the bunny hop page.