Most everything in this section will come in "zip" format. To use them you'll need to unzip the file to your Sex Sim folder. See
this page for information on how to do that if you don't know how.
Usually the zip files are made so everything goes into the right place, but sometimes things end up in places where you need to move them around for them to work, depending on how the creator made their zip file.
If you need help with a specific item just ask in the thread where you found the files, and the author or someone else will more than likely be happy to help you out.
Once you've done a couple you'll get used to it, it's easy.