It's true, the more you write about things is the more you understand things...
When I walked into the world of Conversion Rate Optimization, I didn't know anything about digital marketing.
But the more I started reading about CRO & the more I participated in different client projects is the more I learned.
But what really helped me UNDERSTAND one or two things about CRO was/is writing.
Writing about what I have been learning in the world of CRO and marketing.
Even to this day, I still write (meaning, I'm still inhaling more CRO knowledge).