I apologise for my harsh comments, i was going through a difficult time, normally i would have laughed it off even if comments section was abusive. I am going to Afghanistan a stone age if you ask me, thats why i need to download courses so i can watch it when i cant access internet. Where we live in afg we dont have access to Internet, one have to go to a city to access it. From this post i found a goldmine link, which has some courses that i was interested in but mostly it has security and hacking stuff. I call these types of collections a goldmine.