Here is a list of all resources for delegates/node ops.
Support page/knowledge base
https://iotex.zendesk.com/hc/en-us
Good writeup. The information might be not up to date. If you find anything are outdated. Please contact the team in Telegram or here.
Operation Manual
Always up to date. It is a bit techy. It is mainly for technical people.
Discord
For delegates communication. Please ask admin to join if you are an active delegate.