Colloquial Slovak Book

I have yet to find an adequate book for learning Slovak. I thought this would be in with it's audio CD's and the reviews I read, but the context of each chapter bounces around. There doesn't seem to be any flow to any of the chapters which makes comprehension a little more difficult. For instance there could be a short paragraph about a specific preposition in one section, but the rest of the details for it isn't until several chapters. I found myself flipping around trying to find connections and hoping to understand so that I could communicate. The best part of this book was the beginning chapter on Slovak pronunciation (which is paramount to the learning process). After that, I was sorely disappointed. I use it along with other books to try to get a grasp on the language, but I found that I learned more from asking friends.