Using the Electro - Harmonix Eddy guitar effects pedal is easy. First, connect your guitar to the input of the pedal and your amplifier to the output. Plug in the power adapter. You can start adjusting the basic tone using the tone knob. To change the modulation rate and depth, you can use your playing dynamics with the envelope control. If you have an EXP pedal, plug it in to gain more control over rate or depth. For a unique sound, use the LFO shape warping feature to transform the modulation shape. When using the pedal, avoid exposing it to extreme temperatures or moisture. Keep it clean by wiping it with a dry cloth. If you're not using it for a long time, unplug the power adapter. This will help keep the pedal in good condition and ensure you get great sounds every time you play.