Just bought the book “Lean UK” from Jeff Gothelf (O’Reilley). The basic idea behind it is to apply the principles of lean startups to defining better user experience. There are also good internet posts about this topic in the internet, e.g. on User Experience Engineering.
I will post updates on viable info.
PS: this is my very first eBook. I’m curious to see the advantages and disadvantages of this format while reading on my iPad.