Planning for Studying Abroad

<p>I'm planning on going to London for my study abroad, and I'm wanting to spend 14 days travelling around Europe. How much should I save for my time in London? And then, how much should I save for my 14 days of travelling around Europe? I'd like to go to Italy, France, and Spain. Also, how much in advance would I need to buy the airplane tickets to receive the best deals?</p>