All AWeber plugin tutorials:
1. Go to your stealthseminar account, and go to marketing plugins by clicking on your gravatar
2. Scroll down and find "Aweber" and click on connect
3. A popup window will open, where you have to add your Aweber username and password and click on "Allow Access".
4. Now you can go back to your event and click on plugins. You will now see Aweber there.