KT
You are right, we haven't made all the resources available yet because we are still implementing the SC layer on the blockchain platform and tweaking the code as we proceed. The development is not finished yet thats why we haven't updated the github page. As soon as we are done everything is going to be uploaded on github as well.
For now You can find some materials, docs and guides on www.takamaka.dev
If you need something in particular that you want to know feel free to ask us