This might be interesting for all those who're thinking of getting active in the Google+
"Are you curious about Google+, but you don’t know where or why to start? Check out “Get Into Google+: A Guide For Everyone“, the latest free guide from MakeUseOf. This guide, by author Maggie Marystone, teaches you everything you’ve ever wanted to know about Google’s fledgling social network. ... read on."
The free guide can be downloaded here.