Please don't tell me to build a computer myself, I'm only 15 and I don't want to waste money if I screw something up. But from these links, which would be best?
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=6299835&Sku=SYX-1047
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=6075537&Sku=I455-93900
or http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=4910510&Sku=C122-05290
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=6299835&Sku=SYX-1047
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=6075537&Sku=I455-93900
or http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=4910510&Sku=C122-05290