Depends on what you want and how cynical you are. A relatively easy option would be a meta study. Pick a subject, get a bunch of studies about it and compare me

Depends on what you want and how cynical you are. A relatively easy option would be a meta study. Pick a subject, get a bunch of studies about it and compare methodologies, results, sample sizes, types, devices used to run, os choice, etc. Works great if you have an interest and inclination towards statistics.