I have been prepping my players to run Lockdown since before Anarchy was released. I am running them through pre-lockdown Boston to get them used to the culture, the rules, and play style before we go full lockdown. I am doing runs that introduce things like the Catacombs, Salem, the Rox, the leylines, MIT&T, major players, the Mafia, the harbor, etc. All stuff from the front of the Lockdown book.
The book is really good for setting. It's probably better for Anarchy than for SR5 since most of the NPC write ups are unusable as is, the maps are terrible, and CFD is a mess unless used purely as a story device.