Hats off, man, from another business co-founder who has been doing the same thing for some time. It was surprising to me how quickly I could become competent. Sure, I'm not worthy to unlatch the shoes of our company's technical co-founder, but at least we speak the same language now.
I also recommend for node Guillermo Rauch's Smashing Node.js. Also Javascript the Good Parts by Crockford is the cononical language resource for Javascript, once you've reached your inevitable local maximum in just having knowledge of node.js and not much Javascript per se.
