Here is a tutorial on downloading and unzipping on a Samsung.
(This was done on a Samsung Galaxy Tab 4)
When in your account on your purchases page choose the product you would like to download and click on the “green download” button and then the link below to start the download.
Once downloaded go to your file folder on your home screen
Go to the downloads folder and then click on your zip folder you want to extract
After you select your folder click on the three dots in the top right corner
Choose “Extract” from the menu
After unzipping you will find a folder without a zipper and click on it to open it. Note you may have to scroll down if you have more files it will be towards the bottom.
Once it is open, open the folder.
Tip: You won’t need the MacOSX folder this if for Mac users
Voila! Your folder is now unzipped and you can view the contents. Great job!