What is FontAwesome and why can't I change any icons?

Hey, sorry for all the questions, but I have another one now. I want to change the icons on my website, specifically the ones in blog posts. I noticed that they are labelled something like “fa fa-calendar”. I cannot find the actual icon files in any of my wordpress folders, so I assume font-awesome is something that isn’t built into my site.

How can I change these icons and if I can’t, how do I completely remove font-awesome?

Font Awesome is font based icons. It is like any other regular font but it looks like icons.

You can read more about it here: http://fontawesome.io/icons/

You can also change icons based on their name. So if default one is

<i class="fa fa-calculator"></i>

you can replace it with any other icon from that icon set by replacing its name like this:

<i class="fa fa-bicycle"></i>

Removing Font Awesome library from theme is not going to do much as you will have to remove these <i class="fa fa-calculator"></i> codes from where they appear or they will return blank spaces or squares or some other nasty characters depending on browser you use.