If you're a Kinesthetic learner like me - Someone who learns best by actually doing it pretty much like example-based learning. My weekly newsletter is a crisp 300 word summary about data, growth and marketing hacks with a case study.
Check out the first issue here -
https://www.getrevue.co/profile/anshumansetu
Now let's break the numbers down, reading time is close to 45-60 seconds and the Case study is one hour long at the max