You can download the content from this website for free as an eBook in Dutch. The Dutch version is derived from the original English book from 2014 and the update in 2016. Download for free. No registration required. Use it, copy it, translate it, anything your like – CC4.0 licence.
Download your book for free (the 2020 update will be available shortly).
The latest English edition dates from 2016. The 2020 update will be available soon.