Landing your new job is certainly a wonderful cause for celebration. In fact, don't forget to celebrate, because you definitely deserve to after all your hard work! Here's one word of caution: you don't really have the job offer until it's an official, written offer. So, don't tell all your friends about your new job or go out and buy a new car — at least, not yet. Wait until the deal is signed, sealed, and delivered.

After the celebration, write letters or cards to your entire network of active contacts, letting them know about your new position and thanking them for their help. In turn, you should offer them help or guidance in a similar capacity, should they ever need it (and they will, eventually).