I've got a run of the mill cheapo dehydrator (American Harvest, I think?). Probably bought from Walmart.
For the meat (presume beef), a cut that's not too fatty. Venison works well for jerky.
Slice the meat thin, marinate in a sauce of your desire - soy sauce, Worcestershire, salt, black pepper, liquid smoke, sugar, red pepper, teriyaki marinade are all fair game. Thin, watery marinade - not thick like bbq sauce or ketchup. Marinate 8 hours up to 24 hours then lay the meat on the dehydrator racks. Stack the racks, put the top on and plug it in.
If you're unfamiliar with Biltong, it may be worth looking into. It's a preservation similar to jerky originating in South Africa. Uses vinegar and various spices. Finished product has a somewhat vinegary flavor, as expected, and is a tasty alternative to 'traditional' jerky.
For store bought jerky - Hard Times Beef Jerky from El Reno, Oklahoma. Sometimes the original recipe packages can be a bit peppery, but has a good salty flavor (not bland). There are other varieties, including hot and teriyaki.
Hardtimes Beef Jerky