Meshing

Sims 4 Studio - Sims 4 Hair Mesh Components

Aharris00Britney - How to Mesh Hair Behind the Shoulder in Blender 2.70/2.76

KatieCatSimmer How To Make Sims 4 CC Hair

Sims 4 Studio - How to Create Alpha/Realistic Hair From Scratch

Sims 4 Studio - How to Create Clay/Maxis Hair From Scratch

JellyPaws- Hair Meshing

KiaraZurk - How to modify a hair in Blender

Tekrisims - Hair Meshing with Maya

Frankenmesh

SheSpeakSimlish - How To Frankenmesh Hair

Sim Live - Sims 4 Maxis Match Frankenmeshing Tutorial for Beginners

KiaraZurk - How to join 2 hairs in Blender

Lexicon Luthor - Blender Tutorial for TS4 - Combining two meshes

Okruee - Frankenmeshing Hair

Simandy - How to frankenmesh hairs, part 1

Simandy - How to frankenmesh hair, part 2

Conversions

KiaraZurk - How to convert adult hair to Children for The Sims 4

AHarris00Britney - How to Convert a Hair to an Adult in Blender 2.70/2.76

Hat Chops

DeetronSims - Hat Chop Tutorial

Simple Simmer - Hat Chops Tutorial

NBHT - Hat Chops

Other

Sims 4 Studio - Easy weight assignment for hair - Part 1

Sims 4 Studio - Easy weight assignment for hair - Part 2

Sims 4 Studio - Hair UV_1 unwrap

Aharris00Britney - How to Paint a Custom Hair Shadow in Blender 2.70/2.76

Aloeislandsims - Baking a hair shadow map

Aloeislandsims - Decimating High Poly Strands

Marlyn Sims - Adding Colour Slider To CC Hair

NBHT - How to make hair BGC

NBHT - Remap all hair parts to the same diffuse map

Blender Tutorials

Pancake_Manicure - Blender Tutorial - Hair With Curves

CG Cookie - How to Model Cartoon-Style Hair in Blender - Bezier Curves Tutorial