Remember to source (document) everything you find on your ancestors. Undocumented genealogy is mythology. Most genealogy software will get you through the basics, Elizabeth Shown Mills has authored several very good books on the subject.
[Sources & Evidence]
In Land Deeds, check to see if buyer and/or seller is from the same area where the land is being sold.
The Family Group Sheet identifies a couple and their children. Everyone with a spouse or child has two group sheets; one as a child with parents and usually one as a parent with children.
An Inventory is a verified list of property owned by the decedent. Contents may help determine occupation or financial status.
An "executor" is named by the testator and is required by the court to post a bond. An "administrator" is appointed to handle the affairs of one who dies intestate (without a will).