Google Authorship 
Google Authorship Involves creation of links from google+ to your word press, blogs or to your websites. Name of the author will displayed in the page when you give link to your google+. It increases the visibility of your page and leads to achieve more links towards your site. It becomes a significant process in the marketing strategy.
Google+ Profile
If you have a google+ account it's easily to add links to your sites. once you are ready with your google+ account,
1. click on your profile, make visible yourself as in your profile ->About.
2.At the end of the page you will see Links, click on EDIT button.
3.select contributor to from the links.
4.Give your label name add the URL page you need to link.[URL of your word press or blog post]
5.Click the save button.
In Blogger Blog
1.Open your Blog post.
2.Click EDIT ->Add the site owner name at last of the page.
3.Select the name and align it. Then, click LINK button-> Add URL of your google+ ->OK.
[Don't add rel='nofollow' attribute, to your HTML double "rel" sometimes cause error]
At left end of your page click HTML -> then add rel="author", after the link tag you are given.
4.Update.
In Word Press
1.Go to word press -> WP site
2.Click EDIT- >Add the site owner name at last of your page.
3.Select the name and align it. Then, click LINK button ->Add URL of your google+- >OK.
At right end of your page click TEXT -> then add rel="author", where you given your link tag.
4.Publish.
