We are here to happily give advice, but that doesn't mean you don't have to do some legwork before spending a significant amount of money. It's really the wrong attitude towards buying a watch that in the end should be a posession that means something to you and reflects your own taste.
Just google the difference between automatic watches and quartz watches, read the articles, look at photos of automatic movements. As for the Gshock... really its better you figure that out for yourself because its actually pretty obvious, but just think about what other watches can do that stuff for a tenth of the price and what the resale value would be in 2 years. Not to mention what it weighs. And go and try stuff on in local shops, dont rely solely on online photos.
Im not trying to be harsh, but we are all adults here and its at least expected that you do some of the research based upon the suggestions people make, and its down to you to take some responsibility and get yourself informed at least to some degree before spending a significant amount of cash. Just spend a few hours reading, it will be worth it.
EDIT -
Start here
http://www.realmenrealstyle.com/quartz-mechanical-automatic-movements/