Redirect visitor based upon geolocation
I've had pretty good results previously with SmartIP, and now there is Rules integration which can react to which country the user is in.

So you should be able to set a Rule similar to the following psuedo-rule:


  EVENT:
  
  Page is going to be viewed
  
  CONDITION:
  
  
  Page is: Front page
  IP Address is in country: whatever country you want
  
  
  ACTIONS:
  
  Go to page: YOUR COUNTRY SPECIFIC LANDING PAGE


I know you said you were new to Drupal, so you can find some really useful Rules tutorials at NodeOne: Learn the Rules Framework.

EDIT

I've just twigged you said you want it to the province level rather than country (sorry, that was glaringly obvious - my fault), so you might be looking at some custom code.

Last time I used it, I used SmartIP to get the latitude and longitude of the user, and then the Location API for the nitty gritty.

You should be able to combine this with hook_init() and drupal_goto() to redirect the user to the relevant page.