Thank you for your enquiry.
For reference documentation on the components on the Component Palette of the Visual Forms Designer, please take a look at this Support Forum post.
The Formativ Studio/Creator Developers Guide contains an introduction and usage guidelines on the Visual Forms Designer in the section Creating User Interfaces.
However, I think we all find it helps to learn from examples. Please feel free to ask if you have a question on how to do something specific with Visual Forms.