We have a 6/7 week old baby boar from a rescue to join an older boar and it has reminded me of what little ones are like!
My three top tips would be 1) patience, dont expect a lot from them in the first few days - as MerryPip says, they need time to settle to the new smells and sights
2) hand feed - right from day one offer bits of veg from your fingers - they probably wont take it at first but they will soon - our new little one is now after a week. This hand feeding teaches them that hands are good things and makes them easier to handle and builds the trust. 3) Transport them in something ie use a cosie or fleecy sack to carry the piggies in eg to a run or for a cuddle. Little piggies are v skitty and you will make them feel safer if you carry them in something, not just hands.
exciting times for you! Hope you will post some pics when they arrive.