Hi Jim
Don't worry about grain with large format.There's "youtube "videos on loading the film.The boxes the film come in are
handy for transporting it to the lab (but it's pretty easy to develop yourself). Even with the limited movements of the press
cameras,they still allow you to experiment with the effects. B&W film from Ilford is a good place to start,'cuz they sell
it in lesser quantities (cheaper) and if you feel the need to be awed try E6 (slide or tranny film). Don't spend an extra penny on
expensive lenses until you've had some fun for cheap (okay so I've got some Scottish blood). In a phrase,Go for it!
Regards,Peter