Hello to all the seniors in this forum who spend their precious time in helping out the newbies.

I am finding problem in downloading the latest android version4 ICS on to my system , i just need to know how can i download the JDk 6 to my system

I downloaded the Phyton 2.4 and Git 1.7 and tried installing it but while checking the git tags it gave me an error
fatal: Not a git repository (or any parent up to mount parent /projdata1)
Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set)
when i used the following command git tag -v TAG_NAME.

my other major doubt is in the given link http://source.android.com/source/initializing.html they have said to use only Ubuntu systems , is it better for me to use Ubuntu system for downloading the software.

Hope i get some inputs ,which will solve my problem soon