Copic 101, all you need to know to get started {creative chick}
Tutorial: How to color skin with only 3 copic markers (for beginners)
Tutorial: Copic Marker Skin Coloring [Lighting Angles]
How To Color Dark Skin Tones, A Step by Step Copic Tutorial
How To Color Skin with Alcohol Markers, Skin Tutorial
Skin color references (light & dark skin) : r/copic
Copic Coloring Tips: How To Add Textures
Easy Copic Skin Tut. - English by MaryTaylor on DeviantArt
How to Color Anime Eyes with Copic Markers (Beginner Tutorial)