Everything you need to know about the required equipment
All workouts require a bike, a turbo trainer and a computer/laptop/tablet. This is all thats required to get started.
Do you want to view real data during workouts
Internet Connection - To start a workout
You do not need a head unit to use any of the workout options. There is no reason why you can't use your head unit in conjunction with any of the workout options
For full diary history, upload your own rides (turbo trainer or road rides) to keep all your data in one place.