What to Expect
Expect a light-hearted portal-fantasy book, where advanced math and physics are used pretty much as magic. Besides giving your physicist friends a headache, Holt uses this as a way to consider some of the implications of navigable multiverse theory - all the fun, without the math.
What I liked
I like Holt's tone, with irreverent jokes, pop-culture references, and quick humour. Between the subtle humour and just enough deep ideas to be entertaining without detracting from the fun, he strikes a great balance.
What to be aware of
While the protagonist is a generally likeable fellow, he does try to avoid action and the book can drag a bit. It's light-hearted, not action-packed. There is only loose connections between the books, so you don't have to read them in order.
Coming from a world with magic, Felix just accepted that bottles and doughnuts could form trans-dimensional portals instead of the usual chanting and blood sacrifices. It's the wimpyness of the protagonist he had issues with.
Enjoyable, quick fantasy read, to pass the time when you don't want anything too serious or heavy.
Enjoying the reviews, but wondering who the heck is that Felix fellow? Glad you asked! He's the protagonist of the Togas, Daggers, and Magic series, an historical-fantasy blend of a paranormal detective on the background of ancient Rome.