Hi Volker,
I am sorry, but there is no PDF version of the documentation (there was no such request before).
Please bear in mind the existing documentation is still under updating. There are not too much cardinal changes, but some new parameters need to be added and all screeenshots should be replaced. The update is in the process.
I remember your project is related to wild nature with unique, author's content which is pretty cool!
We are here to help you. Do hot hesitate to ask us questions.
And if you need to start from the beginning again, I recommend to watch step by-step video tutorial and have a look at other useful articles:
https://norrnext.com/support/tutorials
Kind regards,
Eugene