Tips and Tricks: How to add Meta Tags to Blogger blogspot website.

Go to the Edit html section at Design tab on the blog you wish to add Meta Tags.
Here is the code you need to add

<meta content='DESCRIPTION HERE' name='description'/>

<meta content='KEYWORDS HERE' name='keywords'/>

<meta content='AUTHOR NAME HERE' name='author'/>

just after this line

<b:include data='blog' name='all-head-content'/>

Now change the quoted words in each line with your description, keywords and author. Do not remove quotation marks. That's it your done. Enjoy

Try to check whether you have inserted meta tags correctly, search in the Google for "meta tags analyzer tools" to ensure you have successfully added them.