If you're interested in the mechanics of tractors, then you'll want to learn about the PTO system. The PTO system is what powers the implements that are attached to the tractor. It's made up of several components, including the tractor PTO shaft. If you're looking to buy PTO components, there are many options available online, such as PaulB Parts and Reliable Aftermarket Parts. When installing a PTO system, it's important to note that there are no common parts between the IPTO and the transmission PTO. If you're new to driving a tractor, you can find helpful videos on YouTube that explain how to operate and drive a tractor, including how to use the PTO system. Whether you're a seasoned farmer or just starting out, understanding the PTO system is essential for getting the most out of your tractor.