For a detailed walk-through of the architecture, code and reference implementation for the Baseline Protocol v0.1, check out the following videos:
Messaging and workgroups https://youtu.be/ZgaAcQvoD_8
Privacy https://youtu.be/l3BDBNMnR_Q
Privacy Deep Dive https://youtu.be/0vXoSb5bVks
Reference Implementation Part 1 https://youtu.be/2WXvTHR4_7Q
Reference Implementation Part 2 https://youtu.be/R0AEww6fKLk