The “ChronoForms 3.1 for Joomla! Site Cookbook” was written for ChronoForms 3.1 (and 3.2 which is a minor update and the final release version of ChronoForms v3).
The contents of the book are listed here where you can also read or download a selection of recipes (articles) from the book.
While much of the ideas and code in the book can be applied to ChronoForms v4 the ChronoForms Admin interface and the way forms are built changed a lot between CFv3 and CFv4 and there are also some minor changes to the code in in ChronoForms and in Joomla! so code examples may need tweaking. Overall maybe 60% of the book is still useful and applicable to CFV4.
Note that the book was commissioned and published by Packt Publishing and and questions about purchase or delivery should be asked on their site. You can also check a short erratum list and download all the code from the book there.
There may be a ChronoForms v4 book at some time in the future. I'm slowly gathering material.
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