I use GoToMeeting to run my Vector-workout training sessions.
Normally uses attend these online sessions from their computer. This allows me to share my computer screen to my online subscribers, and interact with them.
GoToMeeting have released an application for your iPhone and iPad. You can download this from the appstore. This application allows you to attend online sessions without having to go to your computer.
When you start GoToMeeting, you need the webinar, you just need the meeting or webinar ID, your name and email.
When you click on the Join button, this app quickly takes you to the meeting. If the webinar is going, you will see the shared screen. If the meeting has not started, you will see this screen.
When the session starts, you will see the screen of the presenter. I recommend an iPad, because that makes it easier to see the screen. I have had a user attend my meetings using an iPhone 3GS. He found he could keep up with the meeting but because the iPhone has such a small screen he found it hard to see what I was showing.
When the meeting is closed, you will see this screen.
For more information about courses, please see my web site.