Hi!
If you are running XP, all you have to do to unzip the files is right-click on the file and then choose "Extract All" from the pop-up menu. Then, as it goes through the process, you can either choose to let it extract to the same location (recommended) or you can choose a new location.
If you aren' running XP, you may need to get an unzip utility like WinZip, or SnapZip to unpack it for you. Just Google up the phrase, "unzipping a file" or something like that and you will find a lot of good ones. These utilities will do the work and each has it's only process to do it but many times it is as simple as double-clicking on the file for your utility to come up and ask you where you want it to be unzipped to.
Warning about the digital scrapbooking - it is addicting.
If you have Photoshop, use that! It is the best ever. We have some free tutorial movies about getting started in the University and I used Photoshop when I made them.
Look forward to getting to know you more.