Primarily trivia, with a few crossword puzzles, riddles, and other stuff thrown in. It's a sort of gamebook: each item correctly answered awards points (and doing well on certain sections awards a "special Starfleet award or commendation"), and the idea is that as you proceed through the book you total up your points and, upon reaching appropriate totals, you are granted a promotion to a rank ranging from ensign to admiral. A rather long-term project! The book helpfully provides a section at the back for recording your score for each episode, any commendations received, and the dates you attain each rank.

The book is arranged with a section for each episode, and it recommends that the questions be answered right after watching the corresponding episode. Not a bad idea, given that it contains questions like "What was the first item on the Administrator's desk during Riker's visit?" (answer: a bowl of fruit). I've seen the first episode of TNG a number of times, but couldn't bring the answer to mind.

This would probably be best as accompaniment to a project of rewatching the show, rather than reading the thing straight through or otherwise in large chunks. I'm happy to have it in my collection.