How can I start dp 600

I would prefer to read materials from this link. 

https://learn.microsoft.com/en-us/credentials/certifications/fabric-analytics-engineer-associate/?practice-assessment-type=certification#certification-prepare-for-the-exam

If you build the habit of navigating this Microsoft learn, you can use also Microsoft learn resources for finding answers during your exam. 

After learning concepts from Microsoft learn, try to do practise exams from MeasureUP or similar sites to become comfortable with exam and to identify weak areas. 
For clearing exam, always set personal timeline or deadline for taking exam. when you define timeline, you can track your progress and improve your pace. 

Good luck for your exam.

https://www.youtube.com/watch?v=85sSLsMFjoQ&list=PLPaNVDMhUXGYNfUv8NFoom2SLzC9tc6Lh&index=1
Use Amit sir

youtube channel

to learn DP 600 & DP700