As a young thirteen-year-old, I fell in love with this series. It got so bad that my dad and I use to go to every bookshop in driving distance just so I could see if they had the next book. [If they hadn't? We got it ordered in]. I remember the last book was the hardest to get that my aunts got in the hunt for it. 
 I started the series with book 7 [not realising it was book 7] and I read it feeling completely lost, finished it and then jumped back to book 1. 
 Now, to warn you. If you're over- let's say- fifteen-ish. DO NOT TOUCH THESE BOOKS. 
 I did the stupid mistake of going back to these book well-passed the point where you shouldn't read childish YA. 
 I hate them with a passion now. Everything about them is childish and sloppy, the writing is terrible and the characters are one-dimensial. Yep, I burst my little fantasy bubble. 
 I've learned my lesson. If you're in age-range for these book, then go ahead and maybe you'll enjoy the world that I undoubtedly fell in love with it. If you think you're too old avoid them like the plague.