Help Needed-I am new To Drupal

Code below header and above footer

Administer -> Site Building -> Blocks -> Create new block. Call it "myheader" or "myfooter" (just to identify; you can call it anything!). Add your stuff. If you're adding code, be sure to check "Full HTML" for JavaScript code or "PHP code" for PHP code. Once created, find that block in the blocks list (myheader or my footer) and in the drop-down box next to it, select "header" or "footer".

AdSense

Same procedure as above, but call this one "ad" and select under either footer or content in the drop-down box. For more integration of AdSense into Drupal, check out the AdSense module at http://drupal.org/project/adsense .

Hope that helped you.

Please note that Garland, the default theme, has an interesting header that is at the very top of the page and not at the top of the content.