Paranormal Investigating 101

A good paranormal investigator with be interested in and should know the basics of, and study what you mentioned above plus the following:

1. human psychology and sociology, 2. human anatomy 3. mental illness 4. brain chemistry and functions including hormones, chemicals, etc. and disorders 5. basic science 6. effects of night/day cycle on Earth/Human Body 7. geology 8. building materials, inspection and repair and at least 7-8 other areas, including knowing about how to rule out paranormal explanations for natural ones during investigations of alleged hauntings and paranormal activity e.g. old house being creaky and falling apart, etc. being responsible for certain noises.