Here’s a description:

The ISIS Files provide a unique cross-sectional snapshot of life in Mosul under the Islamic State, spanning doctrinal guidance from its command to the paperwork of its bureaucracy to the notes of students in its classrooms. The picture that emerges from this repository is revealing in both its range and complexity. On the one hand, documents from the Islamic Police and Agriculture departments tell of an organization seemingly obsessed with bureaucracy and institutionalizing every detail of its system of control. On the other, Arendt’s “banality of evil” comes to 6 mind when reading the paperwork of its real estate and zakat (alms tax for the poor) offices, or the bored scribblings of da’wa (proselytization) and military students in the Islamic State’s classrooms (emphasis added). By understanding The ISIS Files as a snapshot of life under the Islamic State’s control, the publications that will accompany each tranche of primary source materials released on the online repository have an important role to play in establishing their historic and strategic context.

There is a lot more here.