Help Needed To Start a GSM+GPS Lcation Transmitter

I am Arka Roy from Kolkata. New here, but geeky enough. Very rudimentary knowledge about Arduinos.
I wanted to start a new project to develop an Arduino based location transmitter which sends a predetermined text message to a phone number.
I don't know where to start and how to get it going. No idea which shield to use, no idea how to use. Neither do I have any idea on the coding part as well. THIS IS MY FIRST EVER PROJECT ON ARDUINO.
I have an Arduino UNO R3
I really need help.
Thank You All.
Arka.

The best way would be to use Arduino UNO, GSM Module & GPS Module. You can get the location coordinates from GPS Module and then can send it to your mobile via GSM Module. That would be a start for you. Share more details.

One of these shields might do what you are after

https://www.dfrobot.com/index.php?route=product/search&search=sim

Which modules should I use ?