Maces has made a number of videos presenting some of the core components of LXDE. The videos are in English. Additionally he produced a German version for each component. The first video is about the LXDE Filemanager, PCManFM.
PCMan File Manager (PCManFM) is a file manager application developed by Hong Jen Yee from Taiwan which is meant to be a replacement for Nautilus, Konqueror and Thunar. Released under the GNU General Public License, PCManFM is free software. PCManFM is the standard file manager in LXDE which is also developed the same author in conjunction with other developers. (Version 21 August 2008, at 18:07 http://en.wikipedia.org/wiki/PCManFM)
Video Link: http://kr.youtube.com/watch?v=jRVoNOETS6U
Maces Blog Post Link: http://www.maces-net.de/2008/10/05/kurzvorstellung-pcmanfm
Project Page: http://pcmanfm.sourceforge.net