Run, don’t walk, away from this book. Aside from a few useful - but hardly hidden - items like studying the geography of an area or the history of a particular tribe, it’s filled with the worst kind of stereotyping and amalgamation from the Internet. Did your great -grandmother like to work in the yard, well, she must be Indian. Did Granddad smoke a pipe? He must be too! Got those high cheekbones? Think Indian symbols look like Hebrew? Must be that lost tribe of Israel... The book actually has a list of physical characteristics (calf size, anyone?) and diseases that claims to point you to that Indian ancestor.
Anybody in the world can publish anything these days and call it a book.