Broadband - What do i do

Got my broadband connection finally on friday.
Came back excited from office. Connected to internet.
Next, i didnt know what to do. Checked my mails in yahoo and google. Found 3-4 mails. These guys mail me regularly. Who are they - Hutch, citibank and hdfc.

After that i logged in yahoo msgr. Didnt chat with anyone.
So, i was thinking. Why did i take the connection?

Guys, reccomend me something interesting that i can do.