??????
You should start reading from chapter 34. You shouldn't drop this manga, try to give it a chance XD
The plot gets freaking amazing, a lot of things happen (good ones but also bad ones sadly) and they discover part of the truth about titans. Only the last chapters are a bit hard to understand but it's totally worth it (๑•ㅂ•)و✧
Wow! After watching the first season of the anime I thought 'I really want to read the manga!'. So I was gonna ask which chapter to start from, but then I started to read the comments and now I'm like 'Nah fuck it, this seems way too depressing and complicated'.
I'm not even sure I'm gonna continue watching season 2. :/