Andrew, everyone seems to have their own approach to organization so you’ll probably get a variety of responses.
My approach to staying organized is to import all media in well labeled bins. And for most of my media inside of Premiere my bin names match the folder names of where the media actually lives on my drives so that I can easily trace.
As for timeline management, if your piece is on the longer side (20-30mins) and there’s chapters or segments then it makes sense to create timelines for each.
I recently finished a 30min show that had four segments. I built each segment in it’s own timeline during rough cut and fine cut stage. And then when all four segments were nearly at a finishing stage I brought all four into a new timeline and from that point on all of the finishing work was done in this complete timeline.
One key to working with a multitude of timelines is to stay consistent with your track assignments. If your music is on audio tracks 7&8 in one timeline, then it should be on those same tracks in all other timelines. And the same would hold for video tracks. Consistency will prevent you from losing your mind if down the road you need to export out versions without text, graphics or music.
I Hate Television. I Hate It As Much As Peanuts. But I Can’t Stop Eating Peanuts.
– Orson Welles