Decent Google+ primer,
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This review is from: What the Plus! Google+ for the Rest of Us (Kindle Edition)If you're interested in understanding what Google+ is and what you can do on the platform as well as *why* you should use it, then you should give this brief e-book a read. It's full of useful information as well as important indicators as to how you should talk and why it's something you can use alongside Facebook and Twitter.
While I disagree with Kawasaki on the role of Google+ - I do not see it as a social network rivalling Facebook, for example - Kawasaki argues powerfully for why it should be used. The hints on how to get the most out of it are useful but because Google+ is a nascent platform and is ever-changing, some of the information I read was already out-of-date. This does not detract, however, from the utility of the book.
It's worth a read if you're interested at all in social media or Google products.