A domain or content expert can put you on track when you enter a new domain or field of expertise. The expert can point out sources, give you a sense of direction or point to common pitfalls.
Trace an expert that is willing to talk to you about the problem and arrange an interview with this expert.
Expert interviews are a common method to get a grip on a new problem area such as health or dementia. Or when you are about to do a design project and don’t have much experience yourself, you can interview a senior designer in the early stages of your project.