I also finished part 3 a little time ago and liked it. I could take some interesting insights with me, i.e. the different fighting styles including some examples.
To conclude I also agree with @DanielaE - it‘s rather hard to discuss this book in this group. However, as @tangy-on-the-rox and @Lemon already wrote: I also like to have this book now and deep in the specific rule whenever needed.