I can't find the worlds to install - COMPLETE GUIDE

Hi Guys, 

I will learning how to install the worlds in ts3

go to this site:

https://store.thesims3.com/

Sign in with the same email address and password that you use for other EA sites, scroll to the bottom of the page, and click "Redeem a Code."  Enter the code you've received, and the world should appear in your account.  You can then download it from your purchase history (Store > My Store Account > Purchase History) or its product page.