Draw 3D model on screen

use this link to  download the source code
http://www.mediafire.com/?4u9w3v0cgwj

Draw 2d image on screan

use this link to download the source code
http://www.mediafire.com/?1secienycz3

XNA with XBOX 360

You can use xna for developing game on XBOX 360 .You can also use debug methord in xbox.but for that you need to subscribe your XBOX  for that.
with the use of xna 2.0 you can easyly convert windows games in XBOX360 games.  

XNA learning videos

Use this link to download xna basics learning videos
http://msdn2.microsoft.com/en-us/xna/bb245766.aspx
For the second video you need to have xbox 360 contraller.
but also you can replace  those using keyboard class.