How to get in download mode faster

-install java sdk

-android sdk

-enable usb debugging

-install adb drivers (you can use superoneclick for this)

adb reboot bootloader

-using this you will avoid the paper clip and pressing any other buttons.

-you can get in this state even if you are in the recovery mode (the image with the red android) using adb reboot bootloader

In jelly bean you can lock the touch screen by pressing the power button and the volulme key +, and unlock it in the same way. Well, this optios does not really work as it should but, it is good to know .

You can take screenshots of the screen, using the power button and volume key -