If you were lucky enough to get a beta invitation for Google+ and have an iPhone, you can already post updates and browse your Google+ streams quickly and easily. In just a few steps you'll be posting updates, checking out your friends' streams, adding them to circles, and more!
As a side note, this tip only works if you already accepted an invitation into the beta, otherwise you won't be able to access Google+.
As a side note, if you have to sign in every time, you can remedy that by simply choosing to stay signed into your Google account. If you've been using Google+ let us know what you think. Do you expect more than the web app if and when they release an iPhone app?
Tips of the day will range from beginner-level 101 to advanced-level ninjary. If you already know this tip, keep the link handy as a quick way to help a friend. If you have a tip of your own you'd like to suggest, add them to the comments or send them in to firstname.lastname@example.org. (If it's especially awesome and previously unknown to us, we'll even give ya a reward...)