Facing Problem with AT commands

Hey everyone! I'm newbie to electronics. Started Learning Arduino. I am Facing Problem in while sending data to the server using Arduino and GSM Sim800. There is no step by step tutorial for this. AT commands are working fine. Can anyone help me for this. what AT commands do i need to use for Sending data to a server and retrieving data from server.

AT
ok

AT+CIPMUX=0
AT+CGATT=1
AT+CSTT="www","",""
AT+CIICR
AT+CIFSR
AT+CIPSTART="TCP","phpfileUrl","80"

I am Stuck into next step.