Please find the materials for NeuroTechHa's first workshop on the NeuroTech101 series: NeuroDevices101. This workshop had two learning objectives: (1) A friendly introduction to Interaxon's Muse, NeuroSky's Mindwave Mobile, and OpenBCI's Ganglion in terms of their hardware, software, pros, cons, electrode, signal quality...; and (2) how to get raw EEG data from these headsets