OK, here's my love.
I read quite a few of the "how to law school" books last summer. I would put them in 2 groups; 1) Planet Law School II and 2) the rest.
Planet Law School is written from a negative viewpoint on law schools and law professors. It generates strong reactions from people both for it and against it. I feel it's approach should be taken as a "buyer (student) beware" rather than a "don't go to law school" approach and really advocates taking responsibility yourself for your eduction and not relying on law school to "spoon feed" it to you. I doubt anyone expreriences all the horror stories he has, but I bet most people will experience or hear of at least one or two similar incidents during their law school career. If nothing else, I think the suggestions for supplemental materials (especially some books by John Delaney) and prepping before you go were worth it.
The other books all have a neutral or positive slant and most contain similar advice (i.e. don't fall behind, go to every class, brief the cases, use supplements, exams are what really counts, etc.) You might glean one or two different things from each, but 90% of the material is the same.
Getting to Maybe is about approaching law school exams. Personally, I found it somewhat difficult to understand and think the LEEWS approach is an easier and better approach to exams, but others like Getting to Maybe.
My advice would be to read PLS II and one or two of the others; then decide if you want to read any more.
Also, I'd suggest reading a few books about the law and lawyers in action that aren't "How to Law School" books. A few I read last summer were "A Civil Action," "The Buffalo Creek Incident," "Gideon's Trumpet," and "The Brethren."