I make turkey and beef jerky all the time. It's quite easy. Here's a recipe for the marinade-I use the same for both turkey and beef.
mix everything together. Add your meat, and marinate overnight. Put your meat on the dehydrator according to the instructions of your machine. Eight hours later...Jerky!
Hint. When I use turkey, I use skinless turkey breast, cut thinly. The thinner you cut your meat the quicker it will dry. When I make beef jerky, I use a very lean roast. Cut off and remove any visible fat, it's what turns the jerky rancid.