If you're a blogger and you're looking for article ideas, you should check out
Net Galley. It's a website where publishers put up the galleys of their books and give advance copies to people through it to do reviews ahead of publication.
You do a bio and put your website in it and then choose topics you are interested in. When you find books you'd like to review, you send a request to the publisher, who ok's it based on how well it fits your blog.
I've reviewed several knitting books, but also gardening and books published by Hay House on meditation, etc for another blog I have.
They send the galleys to your kindle, or if you don't have one to Adobe Digital Editions, which is free to download. Once you view the book, you aren't obligated to do the review either.