Official Resources

Indy is a project hosted by Hyperledger. There are a lot of good resources on the Indy Project Page.
Indy consists of multiple code repositories hosted at Hyperledger's GitHub. Each repository has:
- A README.md with important information for getting started.
- A docs folder, which is published to Indy.ReadTheDocs.io as the official documentation.
- A design folder, which contains additional architecture information.
Project specific standards are proposed as Hyperledger Indy Project Enhancements (HIPEs).
You should also read How to Contribute

Community Resources

These are unofficial resources provided by members of the Indy community. They are not maintained along with the code base, but can be very helpful.

Hyperledger Blockchain Course: Discover the power of business blockchains and distributed ledger technologies with an overview of Hyperledger and introductions to its key frameworks.
SSI Meetup: An online meetup which publishes regular webinars teaching concepts about self-sovereign identity.
Infominer's Resources on Decentralized Identity: A comprehensive list of resources to learn about SSI
Indy Architecture Reference Model and the ARM Explorer: A guide to all the components in the Indy ecosystem.
Getting Started Guide for Enterprise Architects and Developers: A detailed getting started tutorial tailored for enterprise architects.

The Sovrin Network is the largest public deployment of Indy. Their documentation is helpful in understanding the system.

Sovrin Improvement Proposals (SIPs): Standards specific to the Sovrin project.
Sovrin Glossary: A glossary of the various terms used by Sovrin and Indy.
Sovrin Protocol: The Sovrin network's protocol for decentralized identity built on Indy.
Sovrin Library: A library of whitepapers and documents related to Sovrin.