Alright, let's go through this one point at a time.
That thing is called a computer. It connects to the internet and is a means to communicate with other people by sending messages from computer to computer. This forum is the intra-complex message board for the apartments.
Also, if you want to capitalize letters, hold down the key that says 'Shift' while you type the letter.
You're in New York city, specifically Pride View Apartment complex. It's October 6, 2008.