In the Openings app (Make sure to login with your ChessBase Account) you're able to practice the lines Felix Blohberger shows on this FritzTrainer. You have three different features:
1. You can let the app play through the variations at different speed levels
2. Try to guess a variation by comparing two positions and play the moves on the board
3. Drill the repertoire by playing one side and let the app reply to your moves
This enables you to quickly memorise the moves and be prepared when you face a variation over the board.