Learn the 4 foundational disciplines of being a #PI.

#Surveillance
#RecordsResearch
#InterviewTechniques
#ReportWriting

One need not be an area expert to pass on concise, reliably-sourced, information.

Analysis is someone else's job.

Opinions and bias are discouraged.

Your experiences will vary almost more than in any other #profession. Your knowledge-base will be a hundred miles wide and an inch deep.