Tutorials on creating lineart and inking in general. Please add your own tutorials to the list.
Anime/Manga line and colouring tutorial (Gimp) by tgfcoder
Separating lineart tutorial (Gimp) by tgfcoder
Basic Illustrator Lineart by sophiroth
Basic Pen Tool by FangKing
Cleaning up lines tutorial II by joulee
Cleaning up your sketches by Lian
contrast digital ink tutorial by meisan
Digital Inking by MoonLightSpectre
Digital Inking Tutorial by bibly
Digital Inking Tutorial by Ryan Cole
Digital inking with pen tool
Digital Lineart Tutorial by Tetiel
Ego's Theory of Sketching by Ego-Egg
Ego's Inking Texture Tutorial by Ego-Egg
Ego's Inking Tutorial by Ego-Egg
fixing scanned pictures by Spiritwolf6
Getting your lineart onto a transparent layer by Lian
Heavy Lifting Tutorial by augustc4
How To get started with CG by The Art Corner
Improving Pencil Quality by lilykoi
Inking Tutorial for Painter
Lineart and Color by LS96
lineart and shading tutorial by akirataka
Lineart tutorial for GIMP by pheona
lineart with the pen tool by acaraluv
Paint Shop Pro X lineart Tut by Akariteachan
Pen Tool - Tutorial by BlackWolf-Embers
Pen Tool Tutorial by Melissa Clifton
Pen Tool Tutorial by WolfessEnchanted
Photoshop Lineart by Bakaneko
Photoshop Lineart Tutorial by wyldflowa
Smooth Lineart in ShiPainter by yomigaere
Tutorial - Preparing Lineart by Teh-Dave
Tips for Clean-Up and Inking
Turn Photos of People into Line Art by Melissa Clifton
Whea'z Line Tute by wheaman