every link leads you to the page where the tips, tweaks and strategies to apply in Google+ features are well explained.
you can leave a comment if you have a technical quastion to do with using the G+ Network.
For the basics, here is the main Google+ Project help/Support Centre.
How Google+ Stream Works. what you can do with it.
Google+ Notes/Bookmarking Hacks, Tricks
How Google+ Hangouts operates. basics and limits
How to optimize your Google+ Circles in 3 easy steps
Google+, Did You Know? Get to Know!. By Gerard Sanz
Google+ tips on How To Use Stream, Circles. by Matt Cutts
Google+ tips: Getting to know the Hangouts Invite Button.
Google+ Tips: Posts Sharing and Privacy. Commands
Google+ tips. Organizing Circles. more detailed
Getting to know Google+, Plus1 and Profile and Notifications
Optimizing Google+ Circles. strategy Tips, By William Bittner
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