A Unity ID allows you to buy and/or subscribe to Unity products and services, shop in the Asset Store and participate in the Unity community.
Separate names with a comma.
think you very much for your quick help, Fox. now I can download the file. but nextly I guess I do not know how to get the free license. Can you...
but when I enter into the page "http://unity3d.com/unity/download/download-windows" I can't find a button to download the Unity3.4, I don't know why?