What are your cycling goals?
What is your training background?
Do you prefer to ride mostly outdoors or indoors?
You should find my onboarding topic of value although some content is outdated (predates XFAI release and other new features) –
Onboarding steps for Xert trial users and newbies - General - Xert Community Forum
I also compiled this chart for newbies –
Forecast AI vs Continuous Adaptive — better load & recovery management? - Training - Xert Community Forum