To play your guitar through the effects in Live's tracks, you first need to plug it into an audio interface or preamp that boosts the signal to line level. Then, you should set up Live's Audio Preferences to reflect your setup (see the "Audio Preferences Setup" chapter of the reference manual for assistance with this). Now, you can set up a track in Live through which to play your guitar by doing the following:

1. If necessary, create a new audio track in Live. (From the Insert menu, select "Insert Audio Track.")

2. In the Session View, make sure that the View menu's "In/Out" option is checked.

3. Verify that "Ext In" is chosen from the upper "Audio From" chooser and that the appropriate channel for the incoming audio signal is chosen from the lower "Audio From" chooser.

4. Assure that the "Monitor" radio buttons are set to "Auto."

5. Arm the track.