Guys anyone has Cisco ACI workbook for labs free of cost or notes about it I understand it but I feel I want to do with simulators and practice to know better is there anyway to do anything about it!?

Hi guys, I work as network engineer. I work with Switches ( Catalyst, Nexus), routing ( BGP for the most part) and firewalls (ASA, Checkpoint).Is there good resource to level up my game in troubleshooting. Manuals, videos or whatever helped you to le...