Question: How do I look up Rockstar Warehouse account information, e.g. my order history, download links, etc.?

Answer: If you placed an order while logged in as an existing or new Rockstar Social Club member, log into the Rockstar Warehouse site with your Social Club member information and click on the Welcome hyperlink at the top of the Rockstar Warehouse home page.

http://www.rockstargames.com/warehouse