Hello everyone! I’m a relatively long time reader here, but first time poster… I just purchased an Instantron SS-69 Thermolysis machine, but without any accessories or pedal. Could anyone give me a detailed list of the supplies I would need to use this machine? Thank you so much! 
I dont recommend that you learn on thermolysis first. I’d also tell you that if you are working on yourself, thermolysis is NOT the modality I would choose. Your insertions wont be accurate enough for it.
As for supplies, a foot pedal, probe holder and probes re usually all that is required.
Contact Texas Electrolysis Supply and describe your model of machine. Chances are they will have some spare parts for your model. As Seana stated, for beginner do it your self or students thermolysis is never recommended as there is high risk for scarring. Start by learning Galvanic or Blend methods.