In case you weren’t already aware, there’s an Android app for Google+ in the Android Markeplace. It’s pretty simple and straightforward and has a nice, clean interface. Obviously, you have to have a Google+ account, or you can’t use the app and the Google account you created your G+ account with must already be on your phone. I know they’re working on an iPhone app too, but I don’t have an iPhone so I don’t know anything about it. I’d imagine it’s likely very similar in functionality to the Android app.
Click here to follow me on Google+.
Now, the Android app is good for reading posts, writing posts, uploading pictures and videos (even automatically), but you can’t do any of the following with the Android App:
- Invite new friends.
Edit your profile. As of 9/20/2011 or so, you can now change your profile picture.- Change your security settings.
- Change your privacy settings.
- Create, Edit, or Delete circles.
Share a post. As of 9/20/2011 or so, you can now share a post.- Hangouts, which are live video chat sessions with shared whiteboard and RTF editor.
- Search.
- Sparks, which are really just saved searches.
- +1 a comment.
- Edit your own comments. You can only delete one and then enter a new one.
- See how many people are following you.
- See the animation is animated GIFs. These are popular on G+.
In short, the Android app is to be used from an already configured G+ account. You have to use your web browser to do all the things listed above.
Please use the “Feedback” button from the main menu in the app to request all these features.
Also check out The Ultimate Collection of Google+ (Google Plus) How-To’s
Hope that helps!
See this image? 
You’ll find an actual working version of it at the bottom of this article. Please click the appropriate buttons in it to let your friends know about this article so they too can quickly quickly get up and going with Google+.
Check back later for updates too!
Click here to follow me on Google+.
Good Luck and Enjoy your new Google+ account!