[ Pen Testing ] :: Step by Step: Burp Suite

Burp Suite

Start with the basics:
https://www.cybrary.it/s3ss10n/s3ss10n-wednesday-burp-suite-basics/

Use Burp to Test for Path Traversal Vulnerabilities

https://support.portswigger.net/customer/en/portal/articles/2590663-using-burp-to-test-for-path-traversal-vulnerabilities