For your presentation, play with:
Mindomo for a cool mind map program where you can embed video (like Prezi but less sick-making)
Screencastify to create an audio or video narration of your Google slides
NOT CHROME, BUT FREE AND ONLINE:
Powtoon for a slightly more complicated presentation video (expect to import your own pics rather than use their library, as most of the cool stuff costs $$$). Take a look at these tips on making a good video.