For the installation and running instructions see Installing and running Redberry.
The user guide is an extended version of paper published at arXiv:
Introduction to Redberry: a computer algebra system designed for tensor manipulation
by D. A. Bolotin and S. V. Poslavsky (arXiv:1302.1219 [cs.SC])
The online version includes:
One can also find some online tutorials:
Use search form in the upper right corner to find reference documentation about your topic of interest.
Redberry has Java API that can be used both through Groovy and Java and special Groovy binding that adds convenient syntax constructs for interacting with Redberry from Groovy. All examples on this site mainly uses Redberry through Groovy-binding.
Documentation for Groovy binding is separated from Java API documentation:
List known bug, development progress, post your questions and discussion at