Parkerizing is one of the easiest processes for just about anyone. You just need a ceramic or stainless container and a good thermometer and heating element to keep the bath at the right temperature. Probably the most important part is to have a cold water bath right close so you can drop the part in as soon as it gets to the color you want and having a water soluble oil bath nearby to drop it immediately into before the air can start to oxidize it.
Bluing is 80% equipment and 20% technique. Parkerizing is 20% equipment and 80% technique.