I found this PDF and I love it. Thought I might share it with you since I'm using it in my story game "Timer".
It is a great resource for writing anything that involves stealth or spies.
It also has surveillance tips if you want to be that one annoying neighbor who knows everything that's going on. :P
I think stalking your neighbors is a little more than being "that silly guy that knows everything". You should try that one out and see what happens (don't forget to keep us regularly updated).