First time mums-to-be will find these sites a great help, from keeping track of development week-by-week to finding the perfect names for your little ones. Here are some good websites to visit to learn more about your twin pregnancy:

About.com: Twins & Multiples
'About: Twins & Multiples' is an invaluable online resource with terrific articles on twin pregnancy and beyond. Written by Pamela Prindle Fierro, author of many twin parenting books, the articles are short, sharp and easy to read - perfect for busy twin mums and dads. We highly recommend joining Pamela's mailing list to get these artciles delivered straight to your in box.

RANZCOG - Obstetricians and Gynaecologistsin Australia  
If you've just found out you are pregnant with twins and need to find an obstetrician, there's a searchable database here so you can find the practicioners in your area.

Essential Baby
Register for weekly pregnancy updates and opt-in newsletters on specific subjects. Their tools section is a highlight with buying guides and useful information for mums-to-be.

Birth
A comprehensive pregnancy resources site. Sign up for pregnancy emails, join in on a birthtalks message discussion or get involved in free online childbirth and parenting classes!

Baby Centre  
This site has a small section on twins or more.

Multiple Birth Resources
A US based site that has s ome interesting articles specific to multiple pregnancies, including maternal nutrition in multiple pregnancy.