To download and install Microsoft Studio 2012, you can fallow these steps:
Step 1: To download the installation file, click the link;“http://www.microsoft.com/visualstudio/eng/downloads“
Step 2: From the link above, you can download ultimate, professional or premium version of visual studio 2012 as 90 day trail. In video i used ultimate version.
Step 3: You can watch following video for installation.