So you want to learn Special & General Relativity the ‘easy way’? By looking at pretty pictures? Okay, here’s your (Japanese comic) book. Pros: Looks great in iBooks on an iPad. Does what it says in a dense, concise package. The end of chapter sections are great. Cons: None really, but might be too dense for young children.
Since there are a bunch of other reviews that shower praise on the Manga Guide to Relativity, let me focus on the PDF version. No Starch has done a great job of giving you the complete book, including the normally hidden printing crop areas as well as a complete table of contents that will show up well in your favorite PDF reader (Preview.app on MacOSX, GoodReader, iBooks).
But you won’t see these printing areas— GoodReader & iBooks won’t show them. But they ARE welcome if you find you need to print excerpts, or want to see how the book was laid out in InDesign.
As an aside, if you don’t want to see these in your specialized PDF Reader— for example in Preview.app— use Menu > View > PDF Display and choose ‘Media Box’ (not ‘Crop Box’) to turn these areas off.
One of the other things I really liked was the end-of-chapter sections where the Professor(s) delve more into the history, as well as mathematic nuts & bolts of General Relativity.
There is no real downside to this manga, except that it manages to cover such a dense topic in ONLY 196 pages.
So this is not really for younger children IMHO. But if you have a highschooler with an iPad, then I highly recommend the PDF of this manga.
Disclosure: I received the eBook PDF download from O’Reilly for review purposes.