Setting Meta Description

I need to add Meta Description and I understand that needs to be inside <head> tag, such as:

<head>
<meta name=“description” content=“This is an example of a meta description. This will often show up in search results.”>
</head>

Can I do that from Wordpress Admin, or do I need to edit files by hand?

Hello there,

I thought you could easily enter it by using the Header and Footer Scripts plugin.

Regards,
Kharis