https://www.metalevel.at/prolog
The Power of Prolog is an extremely in depth, comprehensive introduction that starts right from fundamentals, and goes into some pretty advanced topics. It’s a really great resource, with well-produced accompanying videos, and leans into properly grokking the language and the “Prolog way” of problem solving.
I’d make a meta point that learning Prolog and forcing yourself to solve problems the “prolog way” serves as a great exercise in understanding the importance of using the right tool for the job, and working with, rather than in spite of , your tools.
Specifically, this online book (mentioned in that discussion) may be a good resource, I've used author's content as a reference several times: https://www.metalevel.at/prolog
Thanks for the online book recommendation!!
There isn't much to read; you mostly have to spend your time thinking about implications.
It'll quickly test how into logic you really are :-)
Good luck.
Meanwhile, SWI Prolog is a mature and commercially used open-source Prolog distribution. It has a huge number of libraries which will come in useful for real world applications.