Kev, i would say try locating someone in NJ before you jump into this craft.
leather & the tools used can get real pricey quick. not just in tools but in stains, hardware, leather & anything else you may use. i did this many years ago then gave it a rest to serve my country, go thru a divorce & rebuild my life. i picked this up because i remembered that it calming calming for me to put on my headphones get into a zone & craft something that no one else has.
if you do decide to jump in take a look at Springfield Leather Company. they are my only supplier for leather. also look at Ohio Travel Bag. while prices seem high with them your not just buying 10 snaps or d-rings. your buying bulk, & quality.
many on this site will be glad to help you with all your questions. if you have any let me know