Short sale investing?

Has anyone done a short sale and had success with it? If yah do you recomend buying the programs they sell to teach you how to go threw the process and if yes can you recomend any?

I’m trying to get into the short sale investing but it seems like all the documents and paperwork you need are a little complicated for someone that hasnt done it before to be able to do it on their own, im wondering if anyone can actually send me the documents or recomend a good program they have baught that has worked for them.
thank you