One of the problems with traditional presentation formats such as PowerPoint is that they are linear. This can be a real issue when you're flexible about how you run a training session, and this is where Thinglink comes into play. It's based on the concept of adding information to images with hotspots. You can create your presentation based around the image and add options to follow someone/thing on Twitter, like a Facebook page, go to a specific URL, play a video and so on. I've worked with it briefly and produced an example. It's very simple and easy to use, with lots of examples of things you might want to try yourself. This would be a great tool to use in conjunction with an infographic.