The 
help guide.
These four sections are designed to get you from being a new user, to being a Form.io expert. Please let us know if you have any questions that are not answered on this site.
This section contains information about Form.io and quick tutorials on how to easily get started.
This section covers how to user the Form.io product, such as building Forms and Resources and how they are implemented within your Application.
This section contains detailed information on how to develop applications on top of the Form.io platform.
This section has many tutorial videos as well as walkthrough examples on how to build applications with the Form.io platform.