This year's NEURON Summer Course is starting to fill up, so you should act soon if you are interested in taking it. The course runs from Monday, June 5, through Saturday, June 10, and will be held at Wright State University in Fairborn, Ohio. It will present a thorough introduction to computational modeling of neurons and networks with NEURON, and is suitable for individuals at all levels of expertise. In order to provide expanded coverage of parallel simulation, and to give participants more time for active learning exercises, we have increased the course duration to 6 days (5 in previous years). Space is limited, and applications will be considered in the order received. No applications will be accepted after the Monday, May 15, 2017 registration deadline, and there will be no on-site registration. For more information and the on-line registration form, see http://www.neuron.yale.edu/neuron/static/courses/summer2017/summer2017.html --Ted