Quotation Marks for Blog

Do you mean “quotes” around “text” like in a post’s “content” section?

It’s built-in, and automatic. In fact if you look close at your blog, you’ll see you already have fancy quotes, albeit a bit restricted due to the font types your theme is using.

Some do blockquote by inserting graphic image as background, this site shows you how to do it with pure CSS http://24ways.org/advent/swooshy-curly-quotes-without-images