The Dongba script is used by the Naxi people in China. It is thought to be the last pictographic script in the world. There is a MOOC that teaches you some of it and many of the cultural aspects related to the Naxi culture and their use of the script. The course is available in French, English, Chinese and German.

The script is very original and the course also helps with fighting off language and script extinction! I hope language enthusiasts around the world would appreciate that. You can check it out here:

https://www.fun-mooc.fr/en/courses/initiation-to-the-dongba-script/