To tune your guitar with GuitarTuna, open the app, select the desired tuning, and follow the on-screen instructions. Pluck each string and match the pitch using the tuner until all strings are in tune.

GuitarTuna provides a chord library where you can find diagrams and sounds for various chords. You can practice playing the chords by following the visual guides and hearing how they should sound.

Yes, you can customize your tuning settings. The app allows you to create custom tunings by selecting the string, adjusting the pitch, and saving your custom setup for future use.

The metronome feature helps you maintain your timing while practicing. You can set the desired beats per minute (BPM) and choose different sound options. To activate it, just select the metronome icon and make your adjustments.

GuitarTuna includes several mini-games to enhance your skills. To get started, follow these steps: 1. Open the app and select the 'Games' section. 2. Choose a game that focuses on timing or chord recognition. 3. Follow the instructions provided. 4. Practice regularly to track your progress and improve your abilities over time.