No former experience is necessary. The key would be to start out with the most economical cow you could purchase. Buy the most economical bull and give them as little attention as possible. You will become a generic producer over night. In the Texas Longhorn breed, most cattle that have large horn or excellent growth ability, could fall into some value range other than generic.
Most generic cattle are small in the horn department and very small in the muscle department.
If you drive down the interstate and look across the pastures, you will see mongrel groups of commercial cattle that are generic. Their owner knows that they are generic. They raise them without any particular consideration for pedigrees, birth weights, performance data or even breeds. It is not a crime to raise generic cattle. Once I knew a fellow in Florida that used Texas Longhorn cattle to assist in his real estate business, in order to eat leaves and brush to make the land more presentable for sale purposes.