PPC or Pay Per Click is one of the top ways to make money online.
You can use Adsense which is the best PPC network to make money on YouTube, from a website or a blog.
The trick to earn lots of money with PPC is in the traffic. To make this work your blog, website or YouTube videos must get traffic and a ton of it.
Now the other way to make money with PPC is to create your own but again you need traffic. Let say you get traffic lots of it you can create your own advertising program and let marketers advertise on your website and you will charge them for either clicks or impressions some like Google ads.