AMP version 8.1
Documentation for the 8.x-1.x branch, the original module code.
AMP version 8.2
Detailed instructions for the 8.x-2.x branch. The 8.2 branch requires the Schema.org Metatag module to create JSON-LD in the page head.
AMP version 8.3
Detailed instructions for AMP version 8.3. This has code for more flexible themes, adding more AMP components, etc.