I now have most of the NRass mods in my game. In addition to Overwatch and Error Trap these are a few I used to get started:
Master Controller
Master Controller Cheats
DebugEnabler
Register
Traffic
Saver
Base Module for Story Progression - You really do not need to make adjustments to the base module if you choose not to. It's a good way to get started with the Mod and you can gradually add other modules as you become more experienced.
For Beginners, and perhaps those who are not all that new to the NRaas Mods, Story Progression is HUGE so WHERE DO I START is a must read!