Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
I'm unable to start the lesson 1. Normal cold &dark start (somewhere) is no problem but if iwanted to follow the lessons Prepard3dV4 is locked. Only an Alt+Cntrl+Delete is the the option to stop Prepard3Dv4