OK, here is my problem:

I have written a companion book to my autobiography, but the book is only 19,025 words.

This is a little light I know, but can it still be sold? I have no formula for figuring out how many pages this would result in, but it is in a niche market.

Does this help the book?

Where do i post on here for beta readers? I have not found that section, but have been told to look for at least one beta reader.

Help! Thanks for your time.