... is not something I can help you with. There are much more professional people on the web who can direct you towards becoming the next bestseller author.
But what I can help you with is designing your book and dealing with all the harsh realities of the printing process. It doesn't matter if it's a 300+ page book or a small booklet like the one shown here:
Milton Moon, born in 1926 and a well known potter in Australia, wrote a small but impressive book about the Chawan, the Japanese Tea Bowl and its traditional role in Chado, the Way of Tea.
This booklet is part of the Australian Ceramics Publication Series.