The document discusses various digital design techniques demonstrated by Chelsea Miller Digital Design including cropping, layers, adjusting contrast and density, color balancing, burning and dodging, adjusting hue and saturation, using text and lasso tools, adjusting opacity and transposing, spot healing, using the magic wand, cloning, inverting, gradient mapping, sponging, applying charcoal and Gaussian blur filters to mimic a pencil style, using oil paint and filter gallery to create a comic style, and applying various effect actions to create painted, space, blast, and texture combining effects.