Provided your battery isn't too far dead you should be able to successfully bump-start your bike if there's not enough juice to crank it over. While there are many methods to achieve the same results, we've found it easiest if there's more than one person helping, that way a couple can push while another mans the controls. If nobody is around you'll have to run and push your bike as fast as you can (hopefully over 5 mph) and then swing a leg over the saddle.
As quickly as you can, turn the ignition on, pop the bike into second gear and quickly dump the clutch as you give it some gas. If all goes well, your bike should fire to life. If not, it's likely because the rear tire is locking up, that's why we suggest second gear as opposed to first-however all bikes are different and sometimes first gear works best. Generally, the lower the gear the greater the torque, which ultimately will cause the tire to lock. And the point of bump-starting a bike is to get the rear wheel to spin in gear, which turns the motor over and gets the engine running. If the rear tire is still locking you can try third gear. Or, stand on the pegs, and as you drop the clutch and give it gas bounce down onto the seat to weight the rear tire for better traction. Time it all right and you should be off and running; just remember to pull the clutch in as soon as the bike starts, that way you don't accelerate down the street.