The CPTS course is a 2-day course that covers IPS, AB and AV in great details.
That is a great course.
It is the only Threat Prevention training course available to the ATC (Accredited Training Centers) for delivery by ATC instructors.
You get the ebook with the course, and the ebook is yours for life.
Apart from that, the rest of the recommended material shared in here is important.
Make sure that you reference the correct version documentation, to match your deployed application.
Bookmark these, become familiar with the pages, and read the Release Notes (important):
https://support.checkpoint.com/results/sk/sk170416 (Support for R81.10 ends in July 2025
https://www.checkpoint.com/support-services/support-life-cycle-policy/#software-support
https://support.checkpoint.com/results/sk/sk173903
https://support.checkpoint.com/results/sk/sk181127