I'm a great fan of The Simple Dollar blog and have learned quite a bit from it. I recommend its best of... stash of blogs. Recently, Trent (the man behind it all) published a very useful summary of 25 weeks of reviewing a book on personal development and productivity. He did this by reading one book on the subject every week! So, please check it out:
The Simple Dollar - Building A Personal Productivity and Development Library
I also greatly enjoy the blogging of Al Mohler, president of the Southern Baptist Theological Seminary. You may have seen him on TV as he has made many guest appearances representing the evangelical Christian perspective on a wide swath of issues. He is known to be a voluminous reader. It is fabled that he has personal library between 30,000 and 50,000 volumes, and legend has it that you can pick any volume and ask questions concerning it which he quickly and ably answer. So he is well-qualified to write about reading, so check out his recommendations on reading, his thoughts on the importance of books for the Christian faith, and some current books he recommends.