Provided that I live in Pakistan, I am constructing a robot that follows one of a few pre-set locations depending upon the input.

I intend to transmit that information onto the robot wirelessly and make it reach that destination.

I am not very familiar with what sort of GPS module to use. Any links or help will be highly appreciated.

 

@AMB33412,
Is WAAS in use in Pakistan? DGPS gives you more accuracy but requires extra equipment and the receivers are more expensive than a typical GPS
A good GPS receiver will keep your robot somewhere on a two-lane road, but that's likely the limit of your accuracy without using more advanced equipment or calculating techniques.
Good luck,
Mark

 

I don't know if its in use in Pakistan, I don't think it is...
And I can't find DGPS modules for purchase either...

Could you , if possible , refer me a nice GPS module thats readily available, easy to understand and gives fine accuracy? (10$ - 50$)

 

So -- if you're just getting started, you might consider something like this:
$40 / m accuracy / https://www.adafruit.com/product/746
It'll be easiest to work with as the module is set atop a small circuitboard to allow easy connections. It is the same or similar to the module used here:
https://www.allaboutcircuits.com/projects/gps-transmission-with-the-hc-12-transmitter/

Or, if you really need the advanced accuracy, you can purchase more expensive modules fro uBlox that appear to do the trick.
$150-$400 / cm accuracy / https://www.u-blox.com/en/product/neo-m8p-series
$70-$150 / m accuracy / https://www.u-blox.com/en/product/neo-7p-module

 

You are (y) amazing

Thankyou so much for this, thankyou