What should a student do immedately after he or she is accepted into a graduate program

Can someone provide advise as to what a student should do immediately after being accepted into a graduate program and has identified with a professor?

Usually students are accepted in the middle of there final year of undergrad. A window of time opens between now and when the first semester begins.

I wonder what should a student optimally do during this time to smoothly transit into the designated graduate program.

Some thoughts:

1. 
   

   Build up relationships with other graduate students, professors

   
   


2. 
   

   Start reading papers on the topic of focus

   
   


3. 
   

   Start preparing course work for first year of graduate school

   
   


4. 
   

   Start identifying specific research area and pin point thesis topic and open questions

   
   


5. 
   

   Get to know the locale

   
   

But ultimately this question is directed at people who have went through this process. What can a student do now in the little time that he or she has to smoothly enter the graduate program?