Soft edge hard edge, how to? - Basics & Interface - Blender

Blender 3D Basics

Smooth

Smoothing — Blender Manual

Software for 3D Printing - 3D Modeling Software/Slicers/3D Printer Hosts

GitHub - mikeroyal/Blender-Guide: Blender Guide

Using Displacement

Official Avatar Shader

Software for 3D Printing - 3D Modeling Software/Slicers/3D Printer Hosts

Blender Review