I've been working with pagelines for half a year now, and I gotta say: There is nothing out there that is so exceptionally well designed and developed.
No matter if you are a total n00b, or if u have extensive php experience, Pagelines always has something in store for you.
I fell in love with Pagelines when I started using it, and was blown away by the functionality when I started developing my first php sections!
It is incredible how well structured Pagelines is, and how nice it is to develop on it.
And if you get stuck, don't worry... the PL support team is amazing. Never ever waited more than 24h for a reply!
Seriously, try it out... u will be amazed!