For an intro, I like Hubspot's Inbound Marketing: <a href="https://www.hubspot.com/inbound-marketing" rel="nofollow">https://www.hubspot.com/inbound-marketing</a><p>I've heard good things about DigitalMarketer and the Traffic and Conversion (T&C) Summit.<p>I don't know if there's a course for all of digital marketing. In my experience, what works on email won't work for Facebook or Amazon etc. Digital marketing channels are different and require different strategies. So I like to stay updated by following the "gurus" of whatever marketing channel I'm interested in.<p>There are gurus for email, landing pages, Facebook, Amazon, Instagram, Pinterest, Youtube, funnels, and pretty much every marketing channel. I think the T&C summit highlights the best.<p>Good primer books?:<p>- Ogilvy on Advertising (Dated but timeless advertising principles)<p>- Copywriting: CA$HVERTISING: How to Use More than 100 Secrets of Ad-Agency Psychology to Make Big Money Selling Anything to Anyone<p>I've heard a lot about the Clickfunnels book - Expert Secrets, but I have not read it yet.<p>Sorry if this is unhelpful.