Getting the core concepts, in a simplified manner for you to learn. From programming, to cryptocoins, to philosophy, to math, to meditation, stoicism!

I help early stage startups in product positioning, messaging, GTM. Worked with B2B and B2C companies in scaling marketing from 0-1.

Knowmad, Open Source Evangelist, Emprendedor, React and Go student, k6 y grafana lover https://twitter.com/jwcastillo www.linkedin.com/in/jwcastillo