Before you can start rocking out, you need to test that everything is working correctly.
You can watch an introductory video at the start. In it, our guitar teacher James introduces you to Yousician.
After the video, it's time to tune your guitar. If Yousician can't hear you play, check here for some troubleshooting steps.
Follow the instructions and start tuning your guitar from low E-string by playing it.
Continue to tune the rest of the strings by playing each string individually and by adjusting the pegs as needed. Once you're done, select Continue.
You can access the tuner at any time from the pause menu of any song (both Practice and Play mode) and from the main game play screen.