This contains the best resources from online for learning Zed Attack Proxy (ZAP) from OWASP. Zed Attack Proxy is a penetration testing tool with loads of functionality such as scanning, fuzzing, ajax spiders etc. It supports both automated and manual penetration testing. Here are the links for learning ZAP.
https://github.com/zaproxy/zaproxy/releases/download/2.4.0/ZAPGettingStartedGuide-2.4.pdf
https://github.com/zaproxy/zap-core-help/wiki
https://vimeo.com/32387480
https://www.youtube.com/watch?v=pYFtLA2yTR8
https://www.youtube.com/playlist?list=PLEBitBW-Hlsv8cEIUntAO8st2UGhmrjUB
https://www.slideshare.net/adigupt09/the-owasp-zap-rn-d-presentation
https://www.slideshare.net/psiinon/automating-owasp-zap-devcseccon-talk
https://www.slideshare.net/fadi/owasp-zap-61005118
https://www.pgs-soft.com/finding-security-gaps-in-your-application-with-owasp-zap-tool/
https://www.youtube.com/watch?v=dqKGGCVFTvI
https://tododev.wordpress.com/2013/12/27/detecting-and-fixing-xss-using-owasp-tools/
https://www.youtube.com/watch?v=rmbi-VbIK6I