What's a good 3D modeling workflow for beginners?

[Avery64]

I keep hearing about "workflow" in 3D modeling, but as a beginner, I'm not sure what that actually means in practice. What's a good 3D modeling workflow for beginners to follow? I want to develop good habits from the start rather than having to unlearn bad practices later. Things like how to organize projects, what order to do things in, and common pitfalls to avoid. Any advice on establishing a solid workflow early on?