First off, unless you are presenting on a stage (or similar conceptual location), don't use powerpoint or keynote if you can possibly avoid it. You will spend way too much time trying to figure out how to format what you have to say, rather than thinking about WHAT YOU SHOULD BE SAYING. As one who knows, I will tell you that taking some concepts and putting them into a formatted presentation is incredibly tedious. If you're just going to be talking with a few folks, find some other way of presenting the info. Hand out a diagram. Walk up to the whiteboard. Speak off the cuff. Something. Anything. Just avoid wasting time on powerpoint.
Another great benefit of not having a structured presentation is that it gets your audience in an immediate dialog mode, rather than what they will assume is supposed to be an extended monolog on your part. Again, per the title of my book, the more you can personally SHUT UP and let others participate, the more valuable the meeting will be.
Actually, this concept has been gaining great popularity recently, with many companies (including Amazon) banning powerpoints entirely. You can, and should, become one of them.
But, when you are giving a presentation to a significant number of folks, it's almost impossible to do without a real powerpoint or keynote slide deck. You can still pull this off, but PLEASE have mercy on your audience and follow some rules:
- Use short bullets and not full sentences. If anyone could deliver your talk by simply reading the slides out loud, you have bad slides. And you don't want your audience being completely transfixed on reading your slides and missing anything good you have to say. Keep it way short and simple.
- People get confused very easily. Don't try to convey more than one basic point with each slide.
- Rehearse your talk, fully, in a standing position, EXACTLY as you would do it to your audience. No matter how many times you pseduo-rehearse it, you will never get the timing right. Even then, you will probably underestimate it. Talks always take longer when they're for real, and everyone hates it when you go over your allotted time.
- Pick your jokes carefully. They will never go over quite as well as you think they will. You will go down in a nuclear pile of slag if you tell a joke and get no response.