Firstly, many subjects have multiple components that can be used by themselves or in combination with some or all of the others. Second, many of these topics can be practical but are presented as theoretical principles with little or no concrete examples or guidance on how to use them. For example, the work by Robert Cialdini on influence can be utilized as a practical toolset in many fields, but the book – although giving multiple research case studies – has no practical use examples.
Create a series of booklets on each component of the subject matter. Each booklet should cover the theory, so the reader understands the why and the how, and then go on with a long list of examples in many areas it can be used general guidelines should also be given if possible. Some of these practical examples use only the booklet’s component, and some use it with more elements from other booklets in the series.
You already have a character that is both famous, and his multiple facets are well known from the media.
Write a fictional novel around that character, or even a series of books with their own world, mixing known facts, background and stories with fictional ones. Just like historical fiction but based on known business leaders.
If you have an artist your work you admire, it might be interesting to know what he think are good books by or on other artists.
Publish daily lists of books recommended by an artist. Offer readers the option to search for artists and find who recommended their book or a book about them, and also find what recommendations that artist made. Have an option for the readers to get a daily email with the new lists.
Most books you read already are likely to sit on your shelf without and further use.
An app that lets you take a picture of a book (or the barcode) recognizes the book and shows you where you can buy it cheaply as an ebook. You can immediately purchase the ebook, and donate the physical copy on your shelf. You win by freeing space for new books, especially the kind that is much better in print (special editions, art albums, etc.), the people you gift the paper copy to win, and the authors and publishers win.
Children books is a particular category with special needs.
A website with book reviews specifically for children’s books, by parents. You can give your personal review and participate in the discussions.