Google+ is great but there’s no archiving system there, you can’t easily find old posts, so I’m going to use this post to accumulate useful links for G+ newbies.
Three Easy Steps to start using Google+ by Linda Lawrie
A thorough step-by-step guide for those who find the whole thing a bit daunting – by Technogran (this post is the first in a series she’s been doing there, so if you find it helpful I suggest clicking on for no.2 and 3 and so forth – I’ve just seen there’s a no.9!
How to send a private message by yours truly (though I hope they will eventually add a private message feature, but this is a workaround for now.) Yay! there now is a Message button on each user’s Profile.
How to access your own posts in just one click by yours truly
How to format text (they don’t allow html code there)
to search Google+ (this is not an official Google search!) Yay! There is now a “search Google+” feature, and seeing as search is something Google are pretty good at, it works very well!
a guide to Google+ by Mashable
the Google+ cheat sheet by Simon Laustsen
How to rearrange photos in an album (answer in the comments to this post)
How to set up an RSS feed for your posts by Linda Lawrie (obviously this only works for public posts)
I will continually add more links here as and when I come across more useful tips and guides.
Updated 17 November 2011