I just finished reading a great book called The Write Start: A guide to nurturing writing at every stage, from scribbling to forming letters to writing stories by Jennifer Hallissy. It was fantastic!!! While I thought I had a pretty good grasp on introducing writing techniques for the young, it opened my eyes to new perspectives and ideas.
This book has a great ideas on introducing writing in proper stages for the very young (toddlers) to school age children. Basic ideas on proper hand use when writing so that a child is comfortable enough to be interested in writing, muscle building and when to encourage the next stage without moving ahead to soon to offering your child a quality writing space and tools. It offers so many great ideas on keeping writing fun, interesting and most of all something a child will want to do versus being made to do.
The Write Start is a great book that I recommend any parent have on their book shelf for reference, ideas and inspiration.