Meta Tags are for the spider bots to identify your blog information there are three primary metas that you need to update
<title>Write your blog title</title>
<meta name="description" content="Write your blog description" />
<meta name="keywords" content="Write all the keywords that you have for your blog" />
Make the changes on the code where ever the words are in RED and then copy the code,Paste the code after the <head> attribute and before the </head> attribute, You will find this in your header.php or index.php files in wordpress theme
