How can I find my whole background ancesters online for free and where?

[kat]

they gave a lot of good answers...also try http://www.familysearch.org it is the Later-Dayy Saints site and you can find a ton of information on there as well. Try genealogy.com, rootsweb.com,rootsweb world connect, there are tons of sites online. If you type in your surname with "genealogy" after it sometimes you can find information that way as well. Best way is, as another poster suggested, to start with yourself and work your way back, your parents, their parents, their grandparents, you'll get much further than you realize before you know it. Best of luck.