You can find your videos when you login to FluidRunning.com, or from inside the Fluid Running App, once you're logged in, you'll see a menu item called "How To".
We recommend watching the videos from the website first, so you can view it on a larger screen. If you need refreshers while you're at the pool, you can use the app.
Don't worry about knowing every movement perfectly though, as you'll be coached through them all along the workouts.