Checkout the workshops page for scheduled and previous workshops.
We are currently doing the 30 days of Testability Challenge
Join the challenge and discussions on the #30-days-of-testability slack channel
We're looking for someone to keep a record of the useful things we find, share, and say, onto a new wiki page: 30 Days of Testability, are you up for it?
We sometimes do little projects like the one shown below, have a read, and feel free to contribute.