1. Only photograph places you have been before (the exception to this rule being one time trips to historic/scenic locations, e.g. Machu Picchu, but in such instances allow yourself as much time as possible to absorb the place).
2. Whenever possible, shoot to the side. Do your best not to allow the camera to get between yourself and your subject (this will obviously be difficult while doing street photography).
3. Avoid irony, it is a trap.
4. Adopt a Vivien Leigh attitude when photographing people. Avoid a bourgeois perspective of old/poor/foreign people at all costs.
5. Do not be afraid to waste film. Failed work opens the door to successful work.
6. Follow your intuition, even if it means breaking one/all of the previous rules.