There are weeks and weeks of lessons within CBU. They are a combination of face-to-face video, plus over the shoulder video. There's also a downloadable written portion (green arrow in the image below) where you can see basic highlights from the video portion. Though I love video, written stuff is easier to review. No need to watch a 20 minute video again to just get a refresher!
I would not bother boosting Facebook posts. That does not perform well. The best strategy is to create a custom audience of your visitors and email list. You may want to use that to create a look-alike audience as well. Then have a sales funnel and email campaign. For instance, you are going to get much better conversion rates from a warm lead who has already received some great free content.
ClickBank represents primarily digital or downloadable products. These typically have high-percentage payouts to affiliates. The commissions average around 50%. You do need to be careful and closely vet all products. There are some great products, some good products, and many crap products. You need to be sure the product and the promotional methods are appropriate for your audience. But ..