Studying from different exam study resources will help you have absolute knowledge of the complete CompTIA CySA+ exam syllabus.
CySA Plus
Is CompTIA CySA+ Exam Hard to Pass? Study Tips to Keep It Simple
CompTIA CySA+ is the most updated security analyst certification that includes advanced persistent threats in the cybersecurity environment.
An Overview on CompTIA Cybersecurity Certifications
The value of most cybersecurity certifications is the same around the world, so these degrees stay valid wherever you go.