First of all, I am not a hardcore Star Trek fan, so if I say something wrong forgive me. I'm a supportive spouse of Star Trek fan.
I got this for my husband for Christmas. I don't know what he considers himself on the grand scheme of Star Trek Fandom. He like and enjoys Star Trek, and used to have quite a collection through his teen years which he gave the majority of it up. Now we have 2 little boys and out of nowhere (from my standpoint) Star Trek started appearing in our home and we have all of the episodes from the Original Series, Deep Space Nine and Voyager... Others are seeping in. Anyway... on to the review...
This is a good episode guide. I'm not sure what it was intended to be but it is much less comprhensive than the The Star Trek Encyclopedia which we also own. It is good for finding an episode or to remember what happened in a particular episode. It has some interesting commentary in the biographies that will give you a laugh. It doesn't contain information about every obscurity that is encountered in the Star Trek universe, but is pretty good to flip through and get an idea of what is going on. I found it useful as a supportive spouse to get an idea of what the heck is going on (especially if we are watching an episode and I fell asleep during the previous episode and don't quite know what happened).
I've come to appreciate Star Trek and enjoy many of their storylines over the last few years. This is a good book for someone who likes Star Trek, but might not want necessarily require having the encylopedia, technical manuals, and Star Charts in their collection. However, I'm sure it would also offer a good bit of information to a die-hard Trekkie if only because they want to have a handy episode guide (if they don't already have them all committed to heart). :-)