Setup
Start the Wii and select "Guitar Hero III" on the system menu. Begin the game by inserting the Wii remote into the "Guitar Hero III" guitar peripheral. You will be able to navigate menus using the guitar's analog stick and the green and red buttons to give affirmative or negative commands respectively. To play with more than one person locally, you will need an additional guitar and Wii remote. Navigate to the "Multiplayer" option on the home screen and choose between "Face-off" and "Co-op." You can also choose to play competitively online.
Gameplay
Press the corresponding colored button on the guitar controller as the vertically scrolling notes line up with the on screen fretboard and buttons. You will need to strum using the black bar on the guitar's body. This is the heart of the "Guitar Hero" franchise. and mastery of this is the key to becoming an expert. Begin on an easy difficulty, which features fewer notes that approach at a slower pace. This allows you to grow comfortable with the guitar controller and the time window each note allows. At higher difficulties, you will need to press two, three or even four notes as once, which act like chords.
Advanced Techniques
Practice "Guitar Hero III" and play through the harder difficulties to refine your skills. Learn how to do hammer ons and pull offs to make it through the toughest parts of the advanced songs. To do these techniques, strum the guitar while holding down a note, and if it is closely followed by another note on screen, you can press the corresponding button without the need to strum again. This is invaluable when there are many notes coming quickly, such as in solos. You can even learn to "two-hand tap" long streams of single notes, such as in the song "Through the Fire and Ice," by strumming once and using both hands to press buttons on the guitar's neck.