How to kickstart a career in digital marketing

Hi Guys, As I have been a performance marketer for six years now, I have dabbled between working for an early-stage startup, freelancing for two years & now running my own paid media agency, I get lot of people who want to learn digital or want to pursue digital but don't know how? Hence, I am thinking of working on a ebook which shares some insights & resources.

Things it may include

• Top performance marketers/ founders journey & interviews
• Resources
• Building a profile, etc

Would love to hear what all things should it 'Definitely' include to make it worthwhile.