@rallenwriter -- My grandmother used to call them preacher beans too, although their real name is rattlesnake pole beans.
They're pretty simple to grow, just make sure that you plant them in nice, loamy soil, and make sure they don't get too dry -- rattlesnake pole beans are very drought resistant, but you should water them often.
You should plant about four to six seeds per pole.
The only tip about harvesting rattlesnake pole beans is to get them when they're young. You should pick them when they get to be about six inches long.
If you want to use them for drying, simply leave them on your pole bean trellis until they dry out.
Best of luck!