Hi, if you remember back a decade ago we had a discussion on solutions to the first edition of Zwiebach's undergraduate textbook in string theory. (I have a copy of the solutions in my computer). Does someone have solutions to the updated second edition of the textbook? I tried looking for solutions but to no avail. I plan after I am done with QFT (I am thinking of also reading Eberhard Ziedler's textbook, though I am kind of worried because I read that for its third volume it has quite a lot of typos, and could irritate espeically when it's a 1000 pages book (it's sarcastic cry :-)), and GR to start from Zwiebach and Gambini's UG texts in string and lqg. Cheers!