Learning to do the exercise is pretty simple, imagine trying to stop passing wind. Also try stopping yourself urinating mid stream, do not do this on a regular basis it is not advised. I found the right spot was after flexing the penis and before clenching the bum.
I did PFEs without fail pre and post op with favourable results. Following a second bout if incontinence I gave up after a while as the were having no effect.
As someone on hear had said they cost nothing to do.
There is an android and apple app called prostate aerobics, that gives instructions,reminders and prompts.
My local incontinence service did offer to insert a probe to check I was doing them right but I declined.
There are many guys who are dry almost immediately.