I am a student who started school. I want to learn more in my spare time. (Computer professional) I don't know how to learn from the North University ??? I have a different part of this training, it is okay, it is rubbish , I am a foggy water. I am in Beijing, I don't know if it is not good, or is it all ????? I don't know if there is any other good training ???? The younger brother will thank this You all.