Hi Brett,
If you need a training, check Training & Certification - https://www.extremenetworks.com/education/courses/ECS-WiNG-1/ on Extremen Net. portal.
If you a just need some materials to refresh your experience, check ExtremeWireless WiING Software
Reference guides under
documentation.
As mentioned by Mevan, all chances must be saved using "Commit Save" (GUI) or "commit write" (CLI)
This prints the running config into startup one.
Regards,
Ondrej