The REST API that bch-js communicates with. This is the software being operated by FullStack.cash. Every major programming language can communicate with a REST API.
Learn about the 'full stack' of software required for a modern phone app or website to communicate directly with the blockchain.
Tutorial.cash is a website that currates tutorials from around the Bitcoin Cash Community. Many are non-technical, which makes for a great introduction to the space.
The cononical reference for everything to do with SLP (Simple Ledger Protocol) tokens and all the tools available for developers who want to work with them.