The LDS have libraries just about everywhere. Go to their website at:www.familysearch.org
Spend some time at this site. Check for the closest FHC to you and also do some searching for your family names, you never know, someone may have already done a lot of your research.
Cemeteries in the NY metro area is covered very nicely in a book called "The Graveyard Shift" by Carolee Inskeep. You can probably pickit it up at www.amazon.com
The book is great.