How to add ad's to your site?

[weallrace]

I have the Supply theme and would like to add an ad to my page through Bidvertizer to help generate money per click. They request you put a html link in the theme, however I know next to nothing about html and when I see the html area of my theme I am confused. I don't want to ruin anything, so where exactly do I place this html link they gave me? Doesn't seem to work anywhere? Any help would be appreciated. Thank you 

[DigitlHaus]

Hey there, 

Head on over to www.digitlhaus.com - we offer marketing, design and development services to increase your ROI, decrease bounce rates and improve user experience. 

Fill out a request and we will get back to you the same day! 

Thanks, 

DH Team