This is the website that I first used when teaching myself to write pysanky. There are free designs that take you through each step of the design, and lots of hints and tips.
US based Ukrainian Gift Shop has tons of Ukrainian products and all the pysanky supplies you need.
Pysanky Supplies
Pysanky Info is a very extensive resource on pysanky with loads of information on history, traditions, symbolism, designs, etc.
Supplies based in Canada. They also have a facebook group that is a great resource where you can connect with other eggers, sharing your egg journey and getting help when you need it.