Yes, for many topics, short guides or tutorials are available, for example, for setting up or using Isa. For each Isa version, there is an introductory video:

Introductory video for Isa Core.

Introductory video for Isa Pro.

You can see which version you are using based on the features on your device. If you see a bar on the home screen with environmental data such as light intensity, air quality or noise, you are using Isa Pro; if not, you are using Isa Core.