We've all seen the fantastic building instructions that one can make with LPUB 4, but getting started was a little difficult without good documentation of the software.
Just recently, Jaco van der Molen has published an online user guide that should make it easier for you to get started getting the most out of LPUB 4.
You can find the website here. If you've got any comments, be sure to let Jaco know, so he can update the instructions if necessary.