To start, you’ll have 700+ templates to choose from. There are some very nice layout customization options here, once you learn how to use them. AWeber uses both “sections” and “blocks” in its organization. Blocks are elements like text boxes, images, etc. Sections are the frameworks in which they exist. Most programs use similar organization, though they may use different terminology. The difference comes in your ability to edit or customize the sections themselves. In previous versions, the ability to customize elements like buttons was limited–you couldn’t change the text of buttons–but you now have the ability to easily customize those elements.
Like I said, most ESP (email service providers) have the capability of creating automated email workflows. So, instead of getting an email subscriber and initially sending them one or two emails, before getting distracted and forgetting all about them, you can be sure that you have emails sent to them over the course of a few days, weeks, months etc. with email automation.
On the other hand, you have pointed out a problem that Aweber should address and that is their training and instruction materials. They should definitely have better video and written tutorials on how to use everything. And while I found the ‘get started’ webinar extremely helpful, years ago, you shouldn’t have to get on a webinar to learn about the product. At the very least, they should record one of those webinars so you can just click and watch any time you want!