BV4244 16 Key Touchpad & LCD Display

Hey everyone, sorry if in the wrong forum but as its an I2C dev i thought it would fit here. Anyway just want to ask if anyone has any experience with these?? I've gone ahead and bought one to play around with and hopefully use in a project but I'm having a bit of difficulty understanding what I'm doing with it, been a year or so since the last time I played with an Arduino and looking like I'm a bit rusty.

The main problem I having is when I include the Libs in my sketch I'm only just starting, it wont compile so could do with figuring that out before I look at ho to use it.

Thanks In Advance
Iain