Product School - The global leader in product management training
The Product Folks - A volunteer-led community of product managers and makers
Intercom on Starting Up - A book about growing a startup
The Product Management guide - A book on how to create and ship products that people love
Prowess - The simplest way to collect and leverage product feedback
Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.