Welcome and I am sure someone living in NY will answer your questions about best places to train...
We live near Chicago and have been blessed with opportunities... you name it, you could find it and shelties are so good to train and make you look so smart...
I think we spent fortune on flossies, bully sticks, sizzles, tracheas, lungs, pig snouts, ears, tails etc but it was better than have destroyed house... Che never was fond of rawhide so this one works only if there is some peanut butter smeared inside of the cracks.
Kong with human grade processed spreadable cheese on top of some kibble for stuffing, everything frozen, generally works well for Che. Che is 10 months old and is mostly over big chewing phase.