What are important things to do when moving into a new home?
check your home warranty clauses so you are intimately familiar with them
ask your neighbors (assuming you have some, and after you give them a bottle of wine as a welcome) if they have had any flood / foundation / insect-pest / neighborhood problems
check city regulations for parking and other municipal restrictions
contact Homeowners' Association for rules and meeting times/locations
purchase and install a fireproof safe to store your deed and other documents
join the neighborhood watch / militia
if you have kids, walk to the nearest park and school
scope out the local pub
enjoy your new home


Oh, and also change the locks, ensure proper labeling of circuit breakers, clean the gutters, change furnace filters, change smoke detector batteries, etc.