I had experience trying to hunt down decent documentation because I wanted to use Sails in a class I taught. I don't use it anymore, but the tutorial videos I made are still available here: [1]. It covers the basics of getting started. Excuse the audio on the first video. I was just figuring out how to use my equipment.

[1] https://www.youtube.com/playlist?list=PLF8BRFFRWv9VkafkA4Jtg...