New user and just need some answers
 

I have just been reading about how some people have been scammed and they joined through a different website and i was wondering how can i check that i have an official version? other questions you could help me with are: does my computer have to be on to carry on downloading? if so, are there any ways of pausing a download and carrying on at a later time after switching my computer off? and lastly are there any ways you can advise me on making items download quicker, i have a broadband connection but it seems to be downloading at about 10kB/s.