Content Note for the book: racism (obviously)/racist language, ableism
This book is a VERY fast read.
That's not necessarily a good thing.
The purpose of this book as Jacobs writes is to start a conversation about racism/prejudice. Jacobs is African-American. He writes the book very specifically only focused on white/black relations in the US. Every chapter addresses misconceptions about race/racial realities and he is addressing both (clueless but willing to learn) whites, and (angry but willing to be told to let it go) blacks. If that last statement seemed to come with an eye roll, ding ding ding, you have correctly assessed how I feel.
I think that Jacobs does an adequate (perhaps slightly more than adequate) job of writing convincingly for clueless white folks on how various things are felt by many in black communities. This is mostly because he is willing to soft pedal it. He's saying "it's bad that you do this, but look on this next page I'm telling black people to not be mean too!" He's also generally assuming good faith (which I suppose is a relatively fair assumption that if a white person is reading this they are very slightly more likely to be willing to listen) that I tend to not be so willing to assume when it comes to white people.
The copy I have is also from 1999 so you can guess that it is pretty out of date with both its references and what is going on in terms of politics/academic research regarding racism.
My mother (when she told me she was getting rid of it, but did I want to take a gander) said it was 101. I would and wouldn't agree. It's 101 in the sense that it is simple/easy to understand/very beginning primer. But I definitely wouldn't give this book to a group of 101 level white folks because it lets us off WAY too easy, if you were trying to convince a white person for the need for an anti-racist worldview, they'd read this and go "well, as long as I am well meaning and willing to talk to various black folks about my understanding of the world it's cool". However subsections of the book MIGHT be useful as a teaching tool. Because as I said it DOES do a decent job of not immediately putting white people on the defensive.
(Ok I'm not being ENTIRELY fair, by the end he gets the tiniest bit more strident towards white people. I felt like he made a conscious decision to become more assertive as the book progressed. But seriously, it's SUCH KID GLOVES I think it might do more harm than good.)