Here's a list of interesting links and references:
Data visualization
- Signal: Understanding What Matters in a World of Noise; Stephen Few
Forms
- Sample forms (for example, consent forms for adults and minors, digital recording release, and NDAs) and a wealth of other relevant information can be found at the Usability.gov (https://www.usability.gov) site
Studies with participants who use assistive tools
- Deque web accessibility training: IAAP certification course (https://dequeuniversity.com/)
Survey writing
- Questionnaire Design for Social Surveys: University of Michigan