Need help finding book series theme all things stop working and people revert to feudal system-scifi/fantasy?

I read Allen's book on this about five years ago and as always I took away the bits I thought were really great and pretty much ignored the rest. Learning his system would have been too complicated for my purposes. But the single most important thing I learned was too always work on the quickest problem first.

I tended to get bogged down with tough problems and it would slow down everything I had planned for the day. So since then I've always tackled things in order of least time consuming to most time-consuming and it has really allowed me to feel like I'm getting more done. But I would always make lists and make notes of things before so I didn't take away much from the specifics of how he suggested doing things (I can't remember the exact details, but I remember his system just seemed more elaborate than necessary and not really better than what I was doing already).

I can't recommend any software, obviously, but I would suggest having new users read Allen's book. Okay, that's what I did and it didn't take, but I did gain something from it. I don't think forcing anyone to subscribe to someone else's system is a good idea, but allowing them to adapt what works for them and ignore what doesn't is a good place to start.

If you find that someone isn't following the guidelines and is performing under par, then a more forceful suggestion might be okay.