With touch legering you will soon learn to tell the difference between proper bites, fish rubbing the line, leaves and sticks going through and even weed brushing the line. It's at it's most useful when using the rolling meat technique (Ray Walton's) or if you're using a rolling bullet, you feel where the drops offs are in a swim so next time you expect them and even look for them.
I agree wholeheartedly with Dave, use an Avon top as the quiver defeats the object. A bit like using a quiver and an alarm. One or the other.
Point the rod, if you can, at the lead. Separate your hands, line in left and keep it tight, rod and reel in right. Don't try to use both hand to do the same task, you'll feel more that way. If you feel a nipping that might be a chub, try Peter Stone's technique and give it an extra yard of line and wait for a screamer.