Hi There and Welcome to GDS!
Did you receive the welcome email? There is a link in there, click that link and choose save and the welcome kit will be downloaded to your hard drive. Make sure you note where on your harddrive you have downloaded it to so you can go and unzip it.
If you need any further assistance you can check out this thread also for more assistance:
http://www.godigitalscrapbooking.com...o_Digital.html
Or holler here