I linked to a pdf of Sethna’s book, which should allow you to evaluate it to see if it’s the kind of thing you want to buy. There’s no (legal) online version of Kardar’s book, but the book is an expansion of his lecture notes available from MIT OpenCourseWare: here and here. The notes give a good sense of the technical level of his discussion in the textbook and the topics he covers.
I linked to a pdf of Sethna’s book, which should allow you to evaluate it to see if it’s the kind of thing you want to buy. There’s no (legal) online version of Kardar’s book, but the book is an expansion of his lecture notes available from MIT OpenCourseWare: here and here. The notes give a good sense of the technical level of his discussion in the textbook and the topics he covers.