The best way to expand a child's vocabulary is to expose them to new words in context. The best way to teach proper grammar is to expose them to it in context. The best way to help a child become a good writer is to expose them to large amounts of good writing. Ask almost any teacher and they will tell you that reading accomplishes all these goals. Find the best quality literature you can and let your child read.
All of the free books we have available are listed below, but this list is continually in a state of growth. At this time, they are only available in text format for reading on a computer or tablet.