Question about Yoast Wordpress plug in for authorship

Selected answers from the Dumb SEO Questions Facebook & G+ community.

• 
  Justin Y: I prefer using a custom snippet in the header.php or footer.php. You can also add the footer.php snippet to the single.php if you prefer it.
  
  Footer.php:
  <?php if(is_single() ) { ?>
  <a href="author link here?rel=author"></a>
  <?php } ;?>
  
  or
  
  Header.php in the head tag:
  <?php if(is_single() ) { ?>
  <link href="author link here" rel="author">
  <?php } ;?>
  
  
• 
  Justin Y: For the publisher tag you can use Yoast or add the following to your header.php to work globally.
  Just add <link href="google page link" rel="publisher"> 
• 
  Yasser Mohamed: Thanks +Justin Y but I am not sure how to do this - told you I am not very technical! Do you mean I just need to add this code to my header and that will take care of establishing authorship only on my blog an not on the rest of my website? Sorry I am a bit confused - it happens a lot!
• 
  Justin Y: Yep that's all. You just need paste in your author url where I noted and then paste the snippet in your theme file. The easiest for you would probably the header.php snippet 
• 
  Yasser Mohamed: Thanks +Justin Y much appreciated!
• 
  Justin Y: Np, glad I could help.