Hi guys!
I'm a french so I don't speak english very well sorry if I make a lot of faults 
, I've my baccalaureate at May. I must make a project and it's consist of programming an arduino shield for that sending sms to parents when child leaves home. So, we have a portal equipped with a RFID reader and an Arduino GSM Shield. I don't know how to cable and program the Arduino GSM shield and rfid reader ...Because the arduino should be informed when the child leaves the gate to automatically send an SMS. Can you help me please ?? Thank yout in advance to those who can answer and help me 