I have a 2012 Grand Caravan. Is it possible to program a new key fob myself? If so I'd love to get some guidance on doing it.

 

Not unless you've got a programmer which would have the instruction how to do it. Otherwise you best bet is a locksmith.

 

You can get a bluetooth OBD scanneer - Programmer on Amazon for 100$ - Kingbolen. - works with free app on your cell phone ...Cheaper than Locksmith and you can do it for any vehicles you buy in the future too.
If you need the Car PIN - there is also a free app called "PIN Puller" on Google play.