This document lists several tools useful for customer development, landing pages, finding early adopters, usability testing, sharing designs, click heatmaps, and A/B split testing. It includes websites for Survey.io, Launchrock, Erlibird, Fivesecondtest, Conjure.io, Crazyegg, and Optimizely. It also provides a link to an Udacity course on product management and marketing.