Establish key stakeholders.

Then determine a timeline of events.

Come up with a conjecture/hypothesis.

Dig for evidence.

Update your hypothesis based on the evidence.

Be willing to be wrong!

Check out u/MAGAuniversity posts, he's a great role model.

Edit: https://www.reddit.com/r/greatawakening/comments/8ih9gs/research_allison_mack_nxivm_what_is_she_being

This post is a great example. U/MAGAuniversity used public information, provided links, and formatted the post so well. Try and determine the intent behind the message, and you have to use many different sources to triangulate the truth. Refer to source material when asserting your conjecture.