PPC continues to be shot at most pistol clubs here in Australia (either under the international WA1500 format, or the national Service Pistol format), and is my favourite match.
All the other comments regarding the importance of trigger control are spot on, as between 26% to 32% of the total score is taken at 50 yards there is zero room for bad habit to achieve a credible score.
It's worth bench testing whatever handgun you're going to use to ensure it will group at 50 yards, this will save frustration and de-motivation later if you're not getting the results you expect.
It took me a few years to find the optimum positions for each stage, like how to mount the barricade, how to brace the revolver when sitting, or how to reliably shoot unsighted (our national version requires shooting 'instinctively' at 7 yards). I'm still experimenting and will no doubt improve those positions again. It's common for newbie PPC shooters to look very awkward when they shoot and struggle accordingly, due to most of the positions being un-natural and requiring you to find the best fit with your own physique.
Lighting is also a big factor for me in terms of score from 25 yards and out, but as you can't really control that it pays to learn to adapt. Having good sights improves consistency.
In my humble opinion PPC is one of the most well-rounded of all the matches and apart from being a great challenge can help improve whatever other matches you shoot.