See Meteor Docs for introduction to Meteor.
Read Meteor Style Guide for format and style of contributions.
Our core is being built with a preference for Coffeescript + LESS.
We are always using latest full release of all community packages.
For development tasks/issues please use the Reaction project issues. We're keeping this as the central issue tracking for all our packages.
To review our roadmap, take a look at the vision page Reaction Vision