Detour - Immersive audio walks, now in 17 cities
Fachords - Fachords is an online site that provides many resources that you can use to take your guitar skills to the next level.
Guides by Lonely Planet - Explore city guides curated by experts.
TrueFire - The Best Guitar Lessons Online Fast. Easy. Fun.
Flamyngo - Create a city guide with help of your friends.
Gitarrero Beginner - Gitarrero Beginner is a multi-featured, and easy-to-use guitar school developed as a guide to help you learn guitar skills and play them comfortably.