Walter nailed it (as always). The two absolutes based on your questions are do NOT rename your files in explorer, and it is absolutely ok to copy and paste a project file in explorer if that’s how you like to back up. But for the most part, every editor works differently. You might benefit to a small degree and be fascinated to watch a pro editor work, but ultimately his/her workflow might not be good for you. Everybody has their slight differences, the key is just to find what works for you and organize EVERYTHING in some sort of consistent way