Screen Shot
Hold the Home button, then hit the "Power/Sleep" button, the screen will momentarily flash, and the iPhone's current screen contents will be saved to the Camera Roll.
Scrolling up
Simply touch the "Status Bar" at the very top of the screen (this is where the time is). When you're in MobileSafari and the Mail application you will automatically scroll back up to the top of the page (or email).
Auto TLD
You have to have Google set as the default search engine for this to work. After this is set, you can just put "apple" into the browser, and press "Go". It'll automatically take you to the Apple website.
Set content restriction
General -> Restrictions" then tap Enable Restrictions and enter a four-digit passcode to restrict your content.
If you wish to get some details; check the site linked here. Pull up older posts.
http://electro-medical.blogspot.com/