Once you have marked all the seams, you can unwrap your ... is displayed on the UV map. You can use the same tools as before to fix any overlap, distortion, or stretching. Blender also has a ...
Auto Smooth from object/on/off Auto UV unwrap option: Smart UV Project/Lightmap Pack Baking works in Cycles only. (see preferences Bake "in" Eevee) Displacement works only with a Displacement node.