WordPress 3.9.1 Installation on Web.com

Hi guys! I hope this question hasn’t been asked anywhere else. I searched and didn’t find a thread regarding it. So I’m newer than a newbie and have not clue what I’m doing and I’ve googled a lot and haven’t found any answers

How do I install wordpress 3.9.1 on web.com and how do I upload the theme that I want to use which is Kavya?

thank you!