Hi Kit and welcome to the best place on the planet. looking forward to getting to know you better.
I am a Mac user, LOVE my Mac, and it's really easy. the files will unzip once they have downloaded and, on my mac, they download into the...downloads file. from there I put them into my ScrapGirls folder and within that folder I have different categories....collections, papers, scrapsimple (that's our wonderful 'make this your own' selection of digital scrapbooking products) etc. I then place my files in their correct places...eg: if I download a collection, it will go in my collections folder, if I just download a paper product, they will go in the papers folder, etc.
you can then open your programme of choice for scrapping, I use photoshop, and start using the products you have downloaded.
download this wonderful FREE e-book on how to digital scrapbook and it should help you get started:
http://store.scrapgi...ebook-p5301.php
feel free to ask as many questions as you need, there will always be someone wonderful to come along and help you out