This is why I shared half the book. I will probably continue to do so for at least a few months (even after the book is launched). I am sharing a lot of the content of the next six chapters on my email list and will probably always have that archived for them.

I really don't want people to buy it if they won't like it.

Its not really an issue of getting to read before I buy.

Its very much that its advertised as something its not.

You could do research into technical debt and bring other peoples anecdotes and experiences into the book and bring the content in line with the title and readers expectations.

Or you could update the title and therefore manage expectations to ensure there are no misunderstandings.