Scale your following:
> make enough content so that people start following you
LinkedIn will invite those followers:
> LinkedIn automatically invites them to subscribe to your newsletter
Consistent:
> be consistent, I post every Sunday my newsletter (never missed a Sunday)
One topic:
> write about one topic, nobody cares about you in the beginning they are following you for your topic most of the times
Create new reach:
> connect with people from outside your bubble(other countries for example).