Setting Up a Podcast Project
1. Open GarageBand

2. Select New Project on the left and Podcast on the right. This will open GarageBand in a podcasting configuration.
Setting the GarageBand Audio Source
1. When GarageBand has launched, choose GarageBand > Preferences.

2. Click the Audio/MIDI tab and then choose Audio Input.
Note: Make sure it is set to your microphone if you are not using the Built-in Audio (as a line-based microphone or internal mic.)

3. Check the input and monitor settings for the track you want to record into. Double-click on the track and adjust the input and monitor settings in the bottom right area of your GarageBand window. Recording Levels are also set here.

4. Now we want to check the Recording Audio Levels coming into garageband. Start speaking into the Microphone, you should see the levels moving up and down in the meter.

If needed, drag the Recording Level slider to adjust your Recording Levels. Remember, if your audio is hitting the red mark, you need to bring the levels down so you audio will not be distorted.