I recommend you draw out a list of all apps that are useful for yourself and most important. However, Facebook, Twitter and eMail apps are probably the most used applications, whether it is on the smartphone or on your lightweight. Bear in mind that newsletter and weather functions can be useful too.
Run iTunes and you can find “Store” on the top of the iTunes interface, authorize the computer to your iphone activation lock account. After you have finished this, iTunes will show “including this one, you have authorized X computers out of your available 5”. X represents how many computer you have already authorized and the max is five. If the computer is public or just for a short time, you need to cancel the authorizen before you leave.
Muting your iPad can come in handy when needed. When the iPad originally came out, there wasn’t a dedicated mute button. Once iOS 4.3 came out, there was an option added where your lock switch can mute the sound. To quickly mute your iPad now, just press and hold the volume-down button.