Tannk (bumped for addage)

Ork Blood Axe Battle Wagon Part 13 Dry Pigment Weathering
Ork Blood Axe Battle Wagon Part 12 Oil Wash
Ork Blood Axe Battle Wagon 11D Finished Glyphs
Ork Blood Axe Battle Wagon Part 11C Making Some Bolted Metal Plates
Ork Blood Axe Battle Wagon Part 11B Ork Blood Axe Glyph
Ork Blood Axe Battle Wagon Part 11A "The Crew" Grot Rigger
Ork Blood Axe Battle Wagon Part 10 "More Wheel Weathering"
Ork Blood Axe Battle Wagon Part 9 "Experiments on wheel Washes"
Ork Blood Axe Battle Wagon Part 8 "Some Detailing and a Camera Change"
Ork Blood Axe Battle Wagon Part 7 "Initial Chipping Weathering"
Ork Blood Axe Battle Wagon Part 6 "The Camouflage"
Ork Blood axe Battle Wagon Part 5 Priming, Pre-Shading & Base Coat
Airbrush Spray Booth 3.0
Ork Blood Axe Battle Wagon Part 4 Magnetize 'Ard Case & Turrets
Ork Blood Axe Battle Wagon Part 3
Ork Blood Axe Battle Wagon Part 2 "More Magnets"
Ork Blood Axe Battle Wagon Part 1 Basic Build

Popular Chips

Popular Chipping Techniques for Warhammer 40k/Sci-Fi and scale modeling

Sponging

Gunpla Tutorial : Chipping Effects using a Sponge

Chip Off The Block

How I Paint - Hair Spray Chipping and Pigment rust streaks

OK (bumped for addage)

TAU-TASTIC #5: Lets Paint A XV104 Riptide Part Three
TAU-TASTIC # 4: Lets Build A XV104 Riptide Part Two
TAU-TASTIC: Lets Build A XV104 Riptide Part One

Nice Rack (bumped for addage)

Catachan Jungle Fighter Paint Rack
Ork Evil Sunz' Badger Minitaire Paint Rack
Orky Evil Sunz Themed Paint Rank & Ready to do some casting
DIY Hobby Paint Rack Part 4 Chipping, Oil Wash, Varnish and Loaded Up With Paint
DIY HobbyPaint Rack Part 3 "Space Hulk" Style
DYI Build a Hobby Paint Rack Part 2 
DYI Build a Hobby Paint Rack

Chips With That?

Flames of War - Chipping Effect

Blitzkrieg

Tutorial: D.A.K. Opel Blitz & Flak37 | Warfare in Scale

Oh Het !!! (bumped for addage)

How to paint a Hetzer From Bolt Action... Part 4
How to paint a Hetzer From Bolt Action... Part 3
How to paint a Hetzer From Bolt Action... Part 2
How to paint a Hetzer From Bolt Action... Part 1

Over The Weather

Ak interactive weathering products

Chips With That

Chipped paint with a #2 Pencil