When you’re adding posts to Google+ you don’t have a lot of options for formatting text. That’s ultimately a good thing. It has a clean, functional design and has no chance of becoming the eyesore that Myspace became.
So basically Google+ isn’t the place to design fancy layouts–you might be better off creating an infographic and posting that, if that’s what you’re going for. But you do have some control with plain text. There are basic codes to apply bold, italics, and strikethroughs.
Put the text between two asterisks, like this:
*Bold Text Is Especially Good for Titles and Headlines*
Put the text between two underscores, like this:
_Italics are especially good for adding emphasis_
Put the text between two hyphens, like this:
-Strike this text out-
Google+ allows and encourages the use of hashtags to categorize your posts and help people who might be interested to find it. Just like on Twitter or Facebook, you add a hashtag just by inserting one at the beginning. Make sure not to leave a space. You can apply multiple hashtags, and when the post is displayed they’ll automatically be displayed in bold.
You can see examples of how they’re displayed in the screenshot at the top of this page.