Though I do not play GP anymore, I remember playing him a while back and how fun he was. As far as I know, this is the best way to play GP. (Though my skills have gotten rusty, this was how i played)

I hate guides in general though I have made a couple, they weren't much...

The only reason to use guides is for learning, otherwise stick to your own stuff:
1. Your own build after playing a bit as a champion
2. Your own style of playing, you don't necessarily HAVE to ward everywhere (this is an example)
3. You will be too busy reading guides so you cannot play and learn from experience
(This comes from personal experience using guides)