I think there are many resources nowadays. Here's a nice online course from the University of Iceland.
icelandiconline.com

Well Coinbase's $25 million donation was to the super PAC Fairshake, which supported pro-crypto candidates from both the Republican and Democratic parties.

It seems that you can't move bitcoin to Etrade but you can move it to Interactive Brokers and probably some other brokers. You can also withdraw bitcoin directly to a bitcoin address, using a "self-custody" cryptocurrency wallet that you can install on your computer or smartphone.