For beginners unwrapping a 3D model with modifiers, start by simplifying the mesh—apply or disable non-destructive modifiers (like Subdivision Surface) to avoid UV distortion, then use automatic tools (e.g., Blender’s "Smart UV Project") for a basic layout.
Modifiers that alter geometry (such as Bevel or Array) can complicate unwrapping if active, so cleaning up the base mesh first makes the process easier.
If you’re unsure how a modifier affects UVs, toggle it on/off while previewing—this catches issues early without rework.