How to learn and understand key algorithm in deeplearning and used it to more board reasearch on my own?

I am a phd student, major in chemistry. now, there are many papers , which bring deeplearning method into chemistry field, to slove some specific problem. i am very interested in it, but i do not know how to start, if there some advices from your guys? i have three problems:

1. how to start? if i need time to learn more basic information about deeplearning? i have alreadly learned the course cs229 cs231n cs182 and so on, i can …

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