Google jerky-dehydrator jerky and you'll find more recipes than you can shake a stick at.
Yes, cheap meats are best because the marinating process doesn't turn them into mush.
I slice the meat about 1/4" thick and about 1" wide.
Depending on how chewy you like your finished product you slice meat either with or against the grain.
You can buy prepared jerky seasonings on-line or at most outdoor stores, Bass World-Cabelas.
 If your looking to make a lot and often, I would buy the spices from a bulk spice outlet and mix your own.
Either way its sorta like making homemade cookies, you get to taste and tweak the recipe to your individual taste ;)