The top row of your app screen is there for easy navigation in Yousician.
The Home tab is the home for most of your content. You can access your Guided lesson and the instrument missions via the Continue learning row. The New on Yousician row showcases the latest popular songs available with Premium+. Scrolling down, you'll find songs you've recently played as well as your favorites and collections. You'll also discover songs recommended for you.
From the top left corner, you'll find your profile picture and instrument level. Tapping in the corner gives you access to the Activity tab. Here you can customize your goal for the session. You can either go for stars or choose the length of time you'd like to play. The goal can be changed to suit your needs for every session. Tapping on the Profile tab allows you to view your progress for the selected instrument. The stats include total play time as well as the number of notes played thus far. You can also view your Followers and who you are Following.