This has come up in similar forms before if you do a search on ML/Machine Learning/AI/Data Science etc. For example:

Ask HN: How to Seriously Start with Machine Learning and AI https://news.ycombinator.com/item?id=16167620

Machine Learning 101 slidedeck: 2 years of headbanging, so you don't have to https://news.ycombinator.com/item?id=15919115 (comments are also worth a read)