MatrixAdapt | Logiciel de gestion d'Entreprise, Création et référencement des sites web

First of all, below points are to be compulsory

• A your own blog or website
• A Google Plus Account
• An About Me page on your blog.

 if "about page" is already present in existing site or blog then need not to be worry but author link should be present there

if you made above points succesfully , then follow below steps
On your website or blog add this link,

<a href="https://plus.google.com/GOOGLE+ ID"
  rel="author" target="_blank"> follow me on Google+</a>

lastly check this link to verified if it done properly

http://www.google.com/webmasters/tools/richsnippets

it will shown like this

Google provide you with a special Webmaster Tools account you can use to immediately access your website data when you create your shared hosting account. After you enable Google Webmaster Tools, you can access crawl statistics, recent queries, errors, and other information that Google collects about your site.




Steps :

Sign up:
visit the Google Webmaster Tools website, sign in with your Google Account – preferably the one you are already using for Google Analytics. Click the red Add a Site button to begin.


site verification

1) Sign into Google Webmaster Tools with your Google Account.

2) Click Manage site > Verify this site next to the site you want.

3) Select the verification method that works best for you.


Upload an HTML file - Google will ask you to download a file and upload it to a specific location.

Add a meta tag - Google will ask you to add a meta tag with a unique value to your site's home page.

Domain name provider (add a DNS record) - Google will ask you to add a TXT record to your domain's DNS configuration.

Link to your Google Analytics account - You can use this option if your site already has a Google Analytics tracking code that uses the asynchronous snippet. You must be an administrator on the Analytics account.




submit sitemap

Once your site is verified, you will want to submit a sitemap if you have one available. This is a simple XML file that will tell Google Webmaster Tools what pages you have on your website.

Dashboard

When your site is setup, you’ll land on the dashboard. This is just a summary showing a few of the more important details about your site.

Down the left-hand side of the screen, there is a menu – I’m going to take you through each section one step at a time. If you don’t have Webmaster Tools setup yet, I’d suggest bookmarking this page and following along once you do.