Command Line
Many applications can be started from the desktop but the true power of Linux stil resides in the shell (bash). The following commands are worth knowing:
Remote Desktop
xfreerdp --sec rdp -d D -g "90%" -k de -a 16 <system>
--sec rdp) remote desktop session on <system> using 16 bit color depth (-a 16), German keyboard layout (-k de) and 90% of your desktop as size (-g 90%) and switch the workgroup to D (-d D).