Here are some links to point you in the right direction for playing rules for each grade, and drills that might help with training.

The handbook is a great starting point and details rules for each grade, playing dates, cancellation policy etc.
The place to go to for each week’s fixtures. Your coach or manager will also share these with parents weekly.
A New Zealand Cricket link that has some good training drills.
Information that shows how to score using criqHQ, more drills and other useful bits.