I find books lots of ways. I read a lot of book/reading blogs, I read the New York Times book reviews, I look at BookBrowse.com, I look at Amazon, I ask friends, etc. I even sometimes go back to my own list of books to read!
I don't spend a lot of time trying to get into a book; if I'm not pretty engrossed within the first 50-100 pages, I walk away. Life's too short to read a book I'm not enjoying.