I'd recommend courses by Stephen Grider (https://www.udemy.com/user/sgslo/). I've been through some of his courses (React/React Native, Phoenix Elixir, Solidity). And all of them were very well documented, focused and accurate. Great stuff!
Last time we received an email on April 18 3-4am CEST, which is April 17 6-7pm PST. Still quite some time left ;-)
Btw, the Metachat community covering chat on this subject is back, just like last W18 batch. You can find it here: https://communities.metachat.com/communities/ycombinator