Thanks for asking a question on www.thisisyourbible.com
There is no personal information about Abraham in the Bible before Genesis 11. Everything we know about him is contained in the book of Genesis beginning in the last part of chapter 11 onward.
The city of his birth was Ur and there has been a lot written about the archaeology of that city. See http://en.wikipedia.org/wiki/Ur
If you want to come to grips with what the Bible really teaches, why not take the free Bible study course on www.thisisyourbible.com? You may take this course either online or by regular mail.
This course will give you a background in the major themes of the Bible from Genesis to Revelation. As with everything we offer, there is no cost to you other than your time and effort. You will also have a personal tutor to whom you may pose questions either from the course itself or those questions which come to you as you read the Bible.
I hope you have found this helpful.