The only books I could really recommend are by Tamariz or Derren Brown. By Tamariz there is Mnemonica, which is fantastic and absolutely exploding with content, make sure that the memorised deck is the direction that you want to move into before you buy it however, there is also 5 Points in Magic. A good read no doubt, however its quite short and as the Tamariz books are pretty collectible, 5 Points probably isn't worth the price if you are only looking for some new tips, which is what it contains, with that being said its content is also great, and really ssets out a good foundation for performing natural looking magic. These are the only Tamariz books I can personally vouch for.
On the other hand: Derren Brown. Absolutely my favourite author, Tricks of The Mind, Absolute Magic and Pure Effect are his books that contain actual magic content, his autobiography Confessions of a Conjurer is also excellent, but I don't think its what you're looking for.
Tricks of The Mind, this book is written for the uninitiated, it takes a beginners look at 5 topics, magic, memory, hypnosis, pseudo science, and body language/reading. For the magician, the magic section teaches a basic coin vanish, some psychology behind magic, and general themes, all useful even if you have experience. The other topics a comparable in their own fields, each offers basic introductions, and very much "The Truth" regarding each topic, or at least Derren's own and quite objective opinions regarding each theme.
Absolute Magic is a collection of writings regarding the relation between theater and magic, and artistry and magic presented as a kind of model for creating the most emotively powerful magic performance you can. Contains some specific examples and a little routining, but not really any magic techniques, let alone sleights or methods. There are some particularly fascinating bits, some essays and definitions that explore the idea of magic as art, and tries to find a definition to the art of magic, in comparison to visual art, other performance art and abstract art. Its very sophisticated and reads a little bit like a textbook, it can be a bit heavy to get through in sections, but still delightful. (You might want to keep your dictionary handy)
Pure Effect is much more on the traditional side, in depth explanations of mostly close up magic routines Derren used to perform and some original creations. Still not purely sleights and methods, also a fair bit of theory and explanation of structure. There are some very sought after routines in this book, a lot of which is very practical information.
Pure Effect and Absolute Magic are quite collectible also, and can fetch very exorbitant prices (I would know), so a little like with the Tamariz books the price will probably scare you away if you aren't in it for the purpose of collecting books beside the magic content (And fantastic books they are to collect), or also the second biggest Derren Brown fan in the world. But I paid the current going price for them, maybe a little less, and I have found them absolutely delightful and worth every cent.
So there you go, I feel like these probably arent exactly what you're looking for, having only a year of experience, but I hope you've gained something from my rambling! Enjoy your reading.