This video is an overview of the AFNI package for the analysis and visualation of (f)MRI data. It is the first in a sequence of videos the AFNI group is producing in lieu of "bootcamps", especially at the present moment (March 2020). * Introduction to principles underlying the creation and use of AFNI * Very brief introduction to fMRI * Fundamental concepts used in AFNI * Datasets: formats, naming, and contents * Where to get information about installing AFNI: https://bit.ly/AFNIstuff The slides for this video are in file afni01_intro_PART_1.pdf