I'm moving to a new state, how will this affect my taxes?

Hi, I'm moving from Florida to Illinois in November (a state without state income tax to a state with income tax) for a new job, how will this affect my taxes? And, more specifically:

- The job will be in Illinois but I don't live in Illinois yet and I had to submit the IL-W-4 selecting Illinois as part of the onboarding process. Will I start paying IL state income tax with my first paycheck in 2024 regardless if I live in the state or not yet?

- Do I have to start paying state income tax immediately or is it not until after a certain amount of days living in the state before I'm considered a resident and have to start paying the state income tax?

- Will I likely be reimbursed for state taxes paid once I file my taxes in 2025 or likely owe money?

- Any general advice on how to properly file my state income taxes for 2024?