fast.ai Practical Deep Learning
coursefast.aiFree~70 hours (9 lessons + projects, ~10 hrs/week × 7 weeks)
Jeremy Howard built this differently. You ship a working model on day one, then peel back the layers of abstraction to see the underlying theory. Train image classifiers, NLP models, and recommendation systems with the fastai library. Confidence comes from doing the work, not reading about it. Widely regarded as one of the best free deep learning courses around, with a strong alumni community to match.