I will just start by saying that this is nothing like the book (which I like) and it is done in an excellent way. They basically just took the names and two or three basic ideas, but that's it. Even the Main Character has a different background and skills.
The premise is that there is an unhappy boy who wants something and finds a magic school. Sounds a bit... used. But:
1) Magic is a tool that the show uses, not a goal in and of itself.
2) The show focuses on many characters instead of just one and it develops their personalities and interactions, independently from the Main Character.
3) The pacing is really good of the show. They cover surprising amounts of subjects in one episode - this is not a show where they will make you wait for the finale for something exciting.
4) What they do is dangerous and people get hurt. Also, magic takes a lot of effort - you don't just say a word and wave a wand.
5) They curse and do not get always get along, and they smoke, sure, but they don't make a big deal out of it. It's not a prude show, but it's not a Spartacus/GoT show (blood & tits) either.
6) The first season has 13 episodes and SyFy has already renewed it for another season. So you won't just start a show, just to see that they cancel it at the end of the first season.
I'd personally recommend it if you are into fantasy. It's not exceptional, but it is good and it got me hooked up and wondering what will happen next. This is why between the first and the third episode, the 18-34 audience has actually been growing.