basics - your basic corner positions is going to the basic attack position. pedals at 9 and 3 or level. I Highly suggest early on to get use to both feet being in front but recognize you will have strong side. My strong side is left foot first. For most turns having your feet level will be good enough especially at the novice stage. Learning on DRY grass help you find the limit with out rocks or trees to hit or hill to fall off of.
I would usually start with hold the student bike still while they move their body side to side on the bike, I would then move on to moving therir bike while they try to counter balance against my movement. This drill is simply to show how much ROM they have and so they can learn the physical limit of their body on their bike. I would then have them while going slightly downhill in my grass hill field of dreams I would have them lean the bike from the lower body down each way though series of longer sweeping turn, as well do some quicker transition to show how fast we can actually move. I talked very little about weight transfer here or pumping although both are important, its is something that is learned later on.
I would then go though and have them pedal a series of mock up hill switchbacks set up with Cones. I would explain that while pedaling we actually keep the bike more level as if not our pedal will hit the ground(or rocks or roots) .
Using the same set of turns as the first part of the lesson I then have them turn while letting their outside foot drop towards the ground(or lifting their inside foot up) this positions if a lot more secure and lets you angulate if you want I am not so sure angulation is a good thing any more in biking but with I honestly think it should be in your tool box.
having you outside foot down lets you bring your inside foot over obstacle and corner with more lean than having level feet.
I would then bring up understeer and oversteer. Understeer is when the front end of vehicle is not gripping and thus the vehicle in motion continues to go straighter than desired. Over Steer is when a vehicle in question is turning to much IE it trying to spin and/or fishtail. On a bike both can happen. Assuming you are not trying to brake mid turn, understeer is caused by having to much weight on the rear wheel and oversteer is caused by having to much weight on the front wheel. To control and regulate either we must learn when/and how to balance on out bike by moving our COM for and aft on out bike.
Understeer or oversteer are not necessarily bad things but learning how to make bike go where you want by proper balance is key and old Sterling Moss quote goes like this " you do not turn a car by turning the steering wheel you present a turn with the steering wheel and make it happen with the throttle and brakes." on a bike(or skis) it is really similar. While riding any bike, the lean and steering angle do not make the bike turn, you pressure the tires at the right time make it turn. basically you need to make those tire grip the ground or turning will not be happening. Pumping is future installment but you just must understand front tire slipping, more handlebar pressure. rear tire slipping more pedal pressure and or moving aft.
cornering will be continued......
Mod Edit: Move to own thread for Technique topic