Big ups for this one. It covers so much in practice and theory. Very re-readable, as others have said.

Strong endorse of Treehouse. Their in-browser IDE removes some of the friction of getting started.

How is Mailchimp failing to meet your needs at the moment?

Dashlane Business, been a user for 5-ish years and I love it. Good team management features and access control. UI is better than most IMO.