Short answer: spend week one on paperwork, week two on your neighborhood, week three on your providers, and week four actually enjoying the city. Here is the order locals wish someone had handed them.
Week one: the paperwork. Florida gives new residents 30 days to get a Florida driver's license once you establish residency, and vehicle registration follows. Utilities, internet and trash pickup vary by area, so set those up as soon as you have keys.
Week two: learn your zone. Jacksonville is huge, and your life happens in your quarter of it. Walk your area, find your grocery store, your park and your coffee, and read our /neighborhoods guide to understand what surrounds you.
Week three: rebuild your list. Doctor, dentist, vet, mechanic, barber. You are replacing all of them at once, so do it deliberately: search the /directory by category and neighborhood and read reviews from people nearby, not from strangers across the country.
Week four: become a local. Check /events for what is on, grab a member deal from /member-deals, take the St. Augustine day trip from our /st-augustine guide, and vote in a poll or two at /polls to earn your opinions.
One more thing. /become-insider free and save your favorites as you go. A month from now the city will feel smaller, in the best way.