First click download from the site.

Download install tutorial

It will take you to the zip file from my dropbox.  Download.Download install tutorial2

Next locate the zip file from your downloads folder.Download install tutorial3

Open and locate the .package file from within the zip folder.Download install tutorial4

Next navigate to:

Windows XP: Documents and Settings\(Current User Account)\My Documents\Electronic Arts\The Sims 4\Mods\

Windows Vista/7/8/8.1/10 : Users\(Current User Account)\Documents\Electronic Arts\The Sims 4\Mods\

Download install tutorial5

Now cut and paste or drag the .package file(s) into your Mods folder.Download install tutorial6

Afterwords that should be it.  Close all folders and play.Download install tutorial7