First download Cryptocoins and extract its contents.

Webfont is ideal when you want to use majority of Cryptocoins icons. Copy webfont/ folder to your project and link cryptocoins.css in your project (you can optionally include also cryptocoins-colors.css if you want to use predefined colors):

<!-- CSS defining icons (required) -->
<link rel="stylesheet" href="webfont/cryptocoins.css">

<!-- CSS defining icon/coin colors (optional) -->
<link rel="stylesheet" href="webfont/cryptocoins-colors.css">

Then insert your icons in HTML, e.g.:

Cryptocoins targets any element with cc class. You can use <i>, <div> or whatever you want.

<i class="cc BTC"></i>

If you're familiar with Font Awesome, it's pretty much the same.