Online training is optional. See Online Course for general information about the online training. for general information about the Lagunita online training. Go to Go to Online Nano Course Login to log in directly to the course. to log in directly to the course. Go to "nano@stanford" and then to the "Dry Etching" section for the three videos on plasma etching principles and to "Choosing a Dry Etching Process" section for guidelines for choosing the right equipment.