Apple has opened a ‘try before you buy’ section in its App Store. The app must already have a free version / lite version to appear.
You can now Gift an App so if you see a great App that a friend or colleague would like, you can send it to them.
It has been made legal to jailbreak your iPhone. This means that you can run other Apps on it.
Want more Quick Wins? Buy the book. Buy the app.