One and Only Dolls
Learn everything from face repainting to making fairy wings from one of the best! Renee does truly amazing work!
Jimbob-Wan
If you want to branch out beyond fashion dolls, or just improve your sculpting skills, try this tutorial for action figures by Jimbob-Wan.
Legends by Valkyrie
Great repainting and customizing tips. You can even learn how to make your own swords and weapons for your dolls!
Krista's Doll Restoration
Tutorials show you how to restore old dolls. Techniques can also be applied to makeovers.
Sher's Doll Doctor
Tons of information on restoring and customizing dolls with great links to resources.
This to That
This site will tell you what kinds of glue will work with different materials.
Crafts Fair Online
Great resource for general crafts supplies.
Mister Art
General art supplies for repainting and other customizing needs.
Rex Art
General craft and art supplies for all your customizing needs.
Edinburgh Imports
Focuses on teddy bears, but has some fabrics and other supplies for dolls.
Cloth Doll Supply
Notions, fabrics, hairs and more for dolls.
American Science and Surplus
Outlet for all kinds of craft supplies, including airbrushes and more.

Repainting:

Juan Albuerne's Movie Stars
Juan Albuerne shows you how to create gorgeous repaints and celebrity look alikes!
Fashion Doll Repainting Series
Comprehensive tutorial from Uniquely Yours Dolls.
Airhead Airbrush
Learn how to paint with an airbrush.

Hair:

Off With Their Heads!
How to take off your doll's head for re-rooting, by Lynn Smith at Custom Dolls Magazine.
Wide Eyed Girls
A tutorial from Dan Lee. Learn how to do amazing re-roots with this easy-to-follow method!
Hair Rooting Tool
Bills itself as the best hair re-rooting tool on the Internet!
Restore Doll
Great resource for saran hair and other doll restoration needs.
Dolly Hair
Another great resource for saran hair with a variety of fantasy colors.
Dollsnhair.com
A resource for kanekalon hair with a variety of fantasy colors.
Intercal
Good source for mohair.
Mini World Dolls
A variety of customizing supplies, including mohair and wigs.
Prilly Charmin's Collectible Dolls
Another source for mohair and felting and rerooting supplies.
Pink Ponytail
Great source for Barbie-sized wigs. Also has other Barbie merchandise, including dolls.
Gone Today, Here Tomorrow
Basic wigmaking modeled on male dolls.
Dollas Dolls
Great hair weaving tutorial. Forget about annoying reroots!
Hair Happenin's
Step-by-step guide for creating a curly updo by Heather Camden.
J. Scully Designs
Shows you how to create great updos and re-root eyelashes!
The Hair Boutique
Spice up your doll's look by learning how to do new and extravagant hair styles!
Dreamweaver Braiding
Learn how to braid all kinds of styles for your dolls.

Costuming & Fabrics:

Costume Design
Lots of tips on constructing costumes, for you and your dolls.
Bias Cut
Tips for sewing garments on a bias.
Grainline Cut
Tips for sewing garments on a grainline.
Fabric Printing
Learn how to make your own fabric by printing it on your home printer.
Medieval Pavilion Resources
Tons of links for historical costumes.
Denver Fabrics
Great selection of fabrics and trims!
The Ring Lord
Real chain mail for armor.
Theatre House
Good source for fabrics and more.

Beads, Trims, Notions:

Cartwright's Sequins and Vintage Buttons
Specializes in tiny sequins that are great for dolls.
Goodie Two Shoes
Find eyelets for corsets and laceup boots. Smaller than those used for scrapbooking!
Out on a Whim
Bead supplies with online classrooms and tutorials.
Cybertrims
Great resource for fashion and craft trims.
Fire Mountain Gems
All kinds of beads, jewelry findings, and supplies.
Fancifuls, Inc
Charms, rubber stamps, and embellishments.
About.com
Learn jewelry making basics for yourself or your dolls!

Clays:

Milliput
Popular air-drying modeling clay for resculpting.
Polymer Clay Express
Lots of supplies for working wtih polymer clay, including books with good tips!
Aves Studio
Good source for apoxy clays.

Accessories & Props:

Millinery in Miniature
Make your own hats with this tutorial from Cynthia Howe Miniatures.
On the Scene
Lots of tips on constructing dioramas and props for your dolls.
Affordable Designs
A variety of doll accessories, but especially good for shoes for flat-footed dolls.
Hitty Print Mini
A variety of miniatures to print for your dolls, including books and boxes.
Stokesay Ware
Miniature china and some furniture for your dolls.
One Sixth Depot
Dolls items in one-sixth scale. There is a great variety of weapons!
Unbeweevable
Miniature dollhouse items.
Medieval Collectibles
Miniature weapons and armor.
Printable Minis
Doll-scale versions of movie posters, books, calendars, etc.
Mini Shop
Miniatures for your dolls.
Doll Artist's Workshop
Miniature accessories and supplies for customizing.

Doll Dealers:

Angelic Dreamz
Great doll dealer, with a variety of brands, including accessories.
BGs Doll House
Good doll dealer with a variety of brands.
The Art of Toys
Great resource for other 12" dolls and action figures.
Picket Fence
Licensed dealer of Jakk's Pacific dolls.

Ball-Jointed Dolls:

FAQ for Ball-jointed Dolls
Comprehensive resource for everything you wanted to know to get started with BJDs!
Newbie's Guide for Ball-jointed Dolls
Another fantastic comprehensive resource for everything you wanted to know to get started with BJDs!
BJD Measurements
Comparison of measurements for Volks, DOD, Leeke, Rhea, Angel Region and Custom House.
BJD Measurments at Den of Angels
A more comprehensive listing of measurements for nearly every type of BJD.
BJD Patterns
Some patterns for ball-jointed dolls at Den of Angels.
Volks
Site for U.S. store of Volks, a manufacturer of Asian ball-jointed dolls.
Dream of Doll
Manufacturer of Asian ball-jointed dolls.
Custom House
Manufacturer of Asian ball-jointed dolls.
Soul Doll
Manufacturer of Asian ball-jointed dolls.
Angel Region
Manufacturer of Asian ball-jointed dolls.
Dollmore
Manufacturer of Asian ball-jointed dolls.
Sunrise Dolls
Dealer of a variety of ball-jointed dolls, including Susie, Soul Doll, Angel Region and more.
Junky Spot
Dealer for Obitsus.

Photography & Web Design:

Creative Pro
Learn how to make a light tent for photographing your dolls.
Doll Photography
Tips for lighting to take great photos of your dolls.
Table Top Studio
Photo light tents, daylight bulbs and more. Great resource for photography sources.
Web design
Discusses the psychology of colors in designing your web site.

Boxes & Stands:

Mad About B
Minimalist stands for 11.5" fashion dolls.
Barbara Peterson
Great display boxes and other Barbie items.
Paper Mart
Lots of boxes and other packing supplies for doll boxes or shipping.
Brenmar Company
Good source for sheetcake boxes with clear lids. Lots of other items to browse through that might be useful for dolls.
Argov Box Co.
Lots of boxes and other packing supplies for doll boxes or shipping.
The Earth Toy Mall
Great storage/display boxes for Barbie-sized dolls. Also has lots of dolls and figures.
Display Cases Inc.
Acrylic display cases for your dolls. Check out the "Diecast" section for doll sizes.
The Box Depot
All kinds of boxes for shipping, storage, and other means.

Doll Boards:

Pink Parlor
Board for Barbies and similar fashion dolls.
Prego
Board for larger fashion dolls such as the Robert Tonner dolls.
Den of Angels
Board for ball-jointed dolls.
Doll Divas
Board for all fashion dolls.
Needle Felters Forum
Board for needle felters.
Dolizioso Magazine
New online magazine for fashion dolls.