Look at the information about your birth grandparents. This can be extremely important after you get a last name to search for. Since there is very good chance that your birth mother's name has changed you will find yourself looking for her parents, brothers, etc. These are the relatives who still have the same last name that she had at the time of your birth. Make note of occupations anything that can lead to where they might live.
Many birth mothers go to another city or even state to give birth.
Some of this information can lead you back to the city she lived in when she got pregnant. Hobbies and talents may be listed. This can be good information for looking through high school and college yearbooks. They may have been members of a club at school that is related to their interests that are listed on your non-id information. Many an adoptee looking through a yearbook has found someone who looked so much like them that they knew she or he was their birth parent.