For what it's worth, I'm a developer and I also think Ext is more dilficuft to penetrate than, say, jQuery. For me, a lot of that has to do with the fact that I learn best by example and there are no straightforward examples in the Ext documentation. There are a number of fairly complete, fairly feature-rich sample applications, but that forces me to dig though a lot of code just to understand one interaction. It's still very doable, but the lack of simple-case example documentation makes it more dilficuft than it could be, I think.The API documentation itself, though, is amazing for such a complex beast. Every time I look at it I'm astounded by the amount of time, effort and energy that has been put into documenting the system components.