I am pretty sure pcmanfm is the default filemanager. If you search the forums, you will see other users explain how the "got icons on the desktop" via pcmanfm. Jeff, lead dev, has suggested adding an iBar to the desktop and placing shortcuts in it. I rarely see my desktop and even when I do/can I still either use the start menu or the Run Everything via the Win + Spacebar keyboard shortcut. Having shortcuts to documents is a whole different can of worms. I believe there has been a post or three about making such a shortcut.