Hope this helps.
You're going to love Naperville!
If renting a single family home, typically, none of your utilities is included. You'll also be responsible for maintaining the lawn and removing snow.
If renting a condo or townhome, the exterior maintenance is included in your rent. Also, use of a pool, clubhouse or tennis court may be included if they are available. However, you'll most likely be responsible for some or all of your utilities. On occasion, your water bill may be included in your rent.
Rental leases are typically 1 year in length. You would need to provide a credit report and possibly a background check. Those reports are more often run by the listing agent and can cost you anywhere from $35 - 50 per adult. If you have a pet, that will limit the available properties some and may cost you additional rent per month or an additional deposit up front.
I hope that helps!