1. There is no exam for the Gateway Performance Optimization course.
That is only a course that can be attended live.
2. The official courseware for the CTPS course is the best study material for the CTPS Accreditation exam.
That courseware book is not something that is shared. It is paid for and assigned to only one student.
The e-book is protected (DRM) and usually acquired through attending the course. It can be otherwise purchased separately (not common).
The student must log into Kortext to redeem and then access their Bookshelf and the courseware e-book.
3. This month ends today.
What is your end goal, your objective? Why do you want to do the exam/s?
You can reach out to your local ATC to find out more about courses and courseware.
These are your main online resources to learn about the Check Point Training and Certifications:
https://training-certifications.checkpoint.com/#/
https://support.checkpoint.com/results/sk/sk163417
https://www.pearsonvue.com/us/en/checkpoint.html
Here are a couple of Check Mates thread to learn more about the courseware (e-kits).
https://community.checkpoint.com/t5/Training-and-Certification/Clarification-on-the-E-Kits/m-p/22893...
https://community.checkpoint.com/t5/Training-and-Certification/CCSA-CCSE-Certification-prep/m-p/2351...
Note:
CCSA and CCSE are the Core courses and have associated Certification exams.
The Specialist courses that have associated exams are Accreditation exams.
Details in here: https://support.checkpoint.com/results/sk/sk163417