In-depth RGB
If you are interested in in-depth understanding of how RGB works, you should check the following resources:
FAQ & videos
Best place to learn core RGB concepts is on our FAQ website. We also have accumulated a lot of explanatory videos on our YouTube channel.
Specifications
RGB is a multi-layer stack of protocols. A good overview is given in the RGB whitepaper but there are other specs available.
API Docs
For developers, we have a lot of API reference documentation for RGB libraries used in contract development and integration.