When texturing a low poly 3D model as a beginner, follow four core steps: UV unwrap the model, create/use a simple texture, apply it to the material, and adjust for fit.
UV unwrapping turns the 3D surface into a 2D template—use beginner-friendly tools like Blender’s "Smart UV Project" to simplify complex shapes. Create a low-res texture (solid colors, basic patterns) in GIMP or use free CC0 resources (e.g., Poly Haven)—minimalism suits low poly style. Apply the texture by linking it to the model’s material (e.g., Blender’s "Image Texture" node). Tweak UV scale/position if textures stretch, and add subtle details (soft shadows, minor color variations) for depth without overcomplicating.
Practice with basic shapes (cube, sphere) first—fewer faces mean easier unwrapping. Try Blender’s built-in texture painting tool for quick edits without switching programs.