Need to edit my HTML source Code

Hi guys,
Kinda confused on this one. I am adding AdSense code to my site. It tells me I need to paste the code into my website’s HTML source code. To paste the code and show ads, I need to be able to edit the HTML source code of my pages.

Would I edit the source code directly through my WebFTP on DreamHost? Or do I do that through my dashboard?

Thank you so much for helping me out.

For WordPress, you’re probably best off installing a plugin to insert the AdSense units. I haven’t used any of them personally, but a few that show up on a quick web search are:

Take your pick!