Well, how much dive experience do you have? Your profile says you're not certified.
Info about the America:
1. the wreck is in the shipping channel, so always follow the line to and from the wreck. Do not surface directly above the wreck or you risk being hit by a boat, be it a small craft or a freighter.
2. the bottom all around the wreck is covered in oil, however it's disguised by a thin layer of silt. Practice good buoyancy control and don't touch the bottom or stir it up with your fin wash.
3. the wreck is upside down with a large space underneath and lots of twisted pipes and debris. Many divers choose not to go underneath the wreck because it is very dark underneath it.
4. You need a good light if you want to see anything beyond the outside of the wreck.
5. a freighter going by will cause the current to shift direction and reduce visibility. It will be very loud, so prepare for that, and you may need to grab onto a piece of wreckage if the freighter comes very close, but remember not to touch the bottom. It can be a fun ride, but be careful.
6. the swim out to the wreck (follow the line that is on your mooring to the wreck) is at around 30 ft for a couple of minutes, then you get to the edge of a wall (lots of bass on top of the wall); keep following the line to the wreck. You'll find yourself on the starboard side of the bow. The wreck lies parallel to the wall. There is usually a very mild current from bow to stern.
7. There are many fish on top of the stern near the propeller, mostly large pickerel/walleye.
8. at the stern there are many things to look at including a small wooden barge.
9. Depth of the wreck is between 60 and 74 feet. Deepest part is at the bottom of the stern.
10. make sure you base your turn pressure on enough gas to get you back to the mooring line (remember the swim back at 30ft) and to do a safety stop.
If you're on a charter, the staff will usually brief you on all these points anyway.