Does anyone have recommendations for educational material that is targeted at beginners who simply want to learn more and aren't planning a career?

There have been a few times acquaintances have asked me what is available for a good introduction and general overview of large concepts but I've never had a solid answer. All I did was force myself to read books that yo-yoed above and below my knowledge level. Considering it's kind of a passing interest that they won't invest large amounts of time into it would probably be best if it wasn't overly drawn out but at the same time covered enough to give them a general idea of key concepts and buzzwords they might hear. It might help if it came off as somewhat engaging so it sticks with them.