ISRO Exam Preparation Tips

In this video main focus what are the main points to cover while preparing for ISRO exam.
ISRO old papers - https://www.isro.gov.in/careers
Mechanical Book - http://amzn.to/2nT4YRP
Electronics Book - http://amzn.to/2EjEVxr
Computer Science - http://amzn.to/2Em0QUX