This is the central repository for all technical materials you'll need to get organized and kickstart your hackathon weekend.
Once you have found a team and decided on what you want to build, file your team as an "issue" here in this repository.
See the example issue to understand which details to provide.
Good luck :-)
OpenLegalData just released a dataset with 100k court rulings and 444k citations. Find them here https://openlegaldata.io/research/2019/02/19/court-decision-dataset.html