Google "Creating a Lesson Plan".
Do not hook your iPad up to a monitor and dilly it on a screen. You will bore the crap out of your audience. The use of a power pint to keep you on task and on schedule can be a powerful tour, but do not cause "Deat by PowerPoint". Google that terminology also. The power point slide is brief and generic to spark discussion. Don't just read the slide to your audience...they can do that on their own. They want to ask questions on every slide. Account for the q and a time for each slide when building the presentation. Your goal is to get the participants to participate. Hopefully they have many ipads in their midst and won't need to see yours anyhow. Get them to touch the screen as often as possible...that will make the memory kick in.
What are the general topics that frustrat average new users? You'll see those topics over and over on is forum, but don't forget that many non Hecht users never findnthis forum. How to pay bills on the net...how to print without an AirPrint printer (Javox tutorial), what is the cloud about, the difference between copy and sync...why sync to the cloud instead of a computer desk top, syncing photos with iTunes vs Dropbox or other could server, why the iPad charger and not the PC USB. Those are just a few off the top of my head.
I teach train the trainer so I could go on and on about various learning styles. Just be aware that some like to touch, some like to write some like to listen and some want to smell it. Watch the audience and make sure you don't have any dozzers. Ask questions to people who look lost...not tough questions. Don't put them on the spot. But get them involved so they are not afraid to ask silly questions.
Hope some of that helps.
Nate
Edit...how about a tutorial on how to review a long post on forums for spelling checker errors? (leaving them in this post for effect)