Indivisible National

https://indivisible.org

Indivisible Project  empowers Indivisible groups to achieve legislative and electoral  victories through legislative advocacy and political campaign expertise,  strategic and coordinated calls to action, and a targeted electoral  program.

https://indivisible.org/guide

The document published by the Indivisible Project. It describes how to  actually carry out grassroots advocacy tips and best practices

https://indivisiblecivics.org

Indivisible Civics builds consciousness, solidarity, and strong partnerships across the country by defending and advancing progressive values, in large part through effective action by local groups. We hold the government and elected officials accountable to the needs of all constituents. We power and lift up our grassroots movement of local groups to defeat the Trump agenda and sustain a powerful progressive movement.