Font awesome icon is a popular icon font using over huge template .
Its easy to use. Lots of icon. Its totally free to use.
Hence there is the latets version 5.3.1
Now you can easily use the icon font , see the video.
I am a freelance front end developer, having 3 years experience in this area. working as a youtube content creator also . Make design and develop also . Do some wordpress theme development too.