enlightening

tending to increase knowledge or dissipate ignorance

• “an enlightening glimpse of government in action”
• “an illuminating lecture”

enlightening or uplifting so as to encourage intellectual or moral improvement

• “the paintings in the church served an edifying purpose even for those who could not read”

highly enlightening; making understandable or clarifying

• “an illuminating lecture”
• “illuminating pieces of information”