One of my favorite books is, "Everything is Illuminated" by Jonathan Safran Foer. http://www.goodreads.com/book/show/256566.Everything_is_Illuminated
This book has a tough beginning. It seems so strange because it is a story within a story. It's a book about someone writing a book, and the person writing the book is also learning English. So, the opening couple of chapters are confusing because his language is strange. But, stick it out and you enjoy the various clever ways the author thinks. James recommended that book to me. I picked it up once and dropped it; but, I tried it a second time because James told me how much he really enjoyed it. I'm so glad I did.
I love almost everything by Louise Erdrich. I have not read her young adult novels, but I enjoy her adult novels. She usually writes about native American cultures mixed with some spiritualism. Two I particularly like are, "The Master Butchers Singing Club" and "Last Report on the Miracles at Little No Hope."