A bit expensive. Just get Swi Prolog.
The Simply Logical book as a start:
https://book.simply-logical.space/src/simply-logical.html you can get a PDF just fine.
Also, for hardcore mode, get paper and pen, I'm not kidding: (again, just use SWI Prolog): https://www.ida.liu.se/~ulfni53/lpp/bok/
Another approach. Scheme and Logic:
S9 Scheme, get the bleeding edge version and compile it. Enough to do the book:
Sketchy Lisp, intro to Scheme:
https://archive.org/details/sketchy-lisp
Logic Progamming in Scheme: https://www.t3x.org/amk/index.html