The best way to learn 3D model topology combines mastering edge flow fundamentals, practicing targeted exercises, and using feedback to refine your work.
Start with basic shapes (cubes, spheres) to understand how edges, loops, and poles impact deformations (critical for characters) or surface smoothness (key for hard surfaces). Progress to replicating simple real-world objects (like a chair or face) while keeping geometry clean and efficient—fewer vertices mean better performance.
Use free tools like Blender with topology add-ons (e.g., LoopTools) to experiment. Share work in communities (e.g., Blender Artists) for feedback—this helps fix mistakes fast. Keep practice regular, focusing on quality over speed.