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!
With drop shipping, you’re effectively partnering with a manufacturer or wholesaler to sell their products. This way, you don’t pay upfront costs to buy inventory, aren’t sitting on unsold items taking up expensive warehouse space, and don’t have to deal with shipping the products yourself. You simply create your site, fill it with drop shippable products, and drive in customers, with almost everything else done for you.