First post and all that

Here is about 700 words of a new story. I haven't written in a while so I feel stiff, like playing piano after a long break.  Does this beginning work?

Does it need more? Less?

Chapter 1

Ricky leaned on the buzzer at the door to the apartment building. In this area around the university there were all kinds of accommodation, some more secure than others. To someone delivering pizzas, like Ricky did that summer vacation, it became a game to classify buildings according to ease of access. There were the walk-ins, the Fort Knoxes, and then buildings like this one with a sort of middling . You had to be buzzed in, but probably the customer would be well off enough to give a good tip.