I totally agree about content. I have been a long advocate of this because if there is nothing on the website, then there is no reason to return. E-mail campaigns are only good to have people return to the website. Having people, come once is a waste and will probably get people to unsubscribe to your e-mails. And once they unsubscribe it is nearly impossible to get them to subscribe again to be on your list.
Before you can send AWesome emails with AWeber, you'll need someone to send it to. The easiest way to begin building your list is to import contacts that have opted-in to your email list, or gave you permission to send them emails. These could be subscribers you've emailed from another provider, or a list of contacts that you've built through your business.