For beginners, creating LODs (Levels of Detail) for a low poly 3D model involves defining tiers, simplifying geometry, optimizing textures, and testing in your target engine.
Define tiers (e.g., LOD0 for close-up, LOD1 for mid-range) based on when the model will be far from the camera—start with 2-3 tiers to keep it manageable. Simplify geometry using tools like Blender’s Decimate modifier to lower polygon count without losing key shape; use real-time preview to adjust changes instantly. Optimize textures by using smaller, lower-resolution maps (e.g., 512x512) for distant LODs—most engines let you assign different maps per tier. Test in engines like Unity or Unreal to ensure smooth LOD switching without visible glitches.
Start with fewer tiers and built-in tools to avoid overcomplicating the process as you learn.