What are the fundamental beliefs of Ahmadis?

thanks for this…he said in the book that he’s basing everything on the Quran and not on any traditions(hadith&sunnah), doesn’t sound very appealing to me because I strongly believe we can’t understand Quran without Hadith and if one tries to do that, he gets lost and astray.

I assume

you have studied this book, can you please tell us in a short summary the extra-ordinary specialities of this book.