Hi Matt,
They will need to be fed twice a day, and have water and shelter and sufficient space (Pigs go through ground super fast especially in wet weather). You'll also need good fencing,that being said we just use two strands of mains electric fencing, and have never really had any problems.
As long as you make the time for them, they are hugely rewarding....and a great way to de-stress after a crappy day. Think of them as kids that don't answer back!!
You're also going to have to do your homework, but there's plenty of books you can get before taking the leap. Also read all the posts in this section, you'll learn loads and have a good laugh.
Regards,
Morgan