In addition to the resources available at golang.org there are a range of community-driven initiatives:

• The Go Bridge Foundry - A member of the Bridge Foundry family, offering a complete set of free Go training materials with the goal of bringing Go to under-served communities.
• Learning to Program in Go, a multi-part video training class.
• Pluralsight Classes for Go - A growing collection of (paid) online classes.
• CodeMentor.io offers an online Go tutorial.
• Ardan Labs Training - Commercial, live instruction for Go programming.
• Go By Example provides a series of annotated code snippets.
• Learn Go in Y minutes is a top-to-bottom walk-through of the language.
• Free Go Language Workshop Framework Training is running regular free BYOD workshops in London, UK
• GoingGo.net - A collection of videos and articles for learning Go.
• Golang Tutorials - A free online class.
• Golang Challenge - Monthly code competitions to improve your Go skills.

Learning resources for specific topics:

• LearnConcurrency outlines a course of study of Go's concurrency model and patterns.
• LearnErrorHandling links to resources about error handling in Go.
• LearnTesting links to resources about testing in Go.
• LearnServerProgramming links to resources about server programming in Go.