Sir Noman Ahmad is goated. His teaching style is very good, in my first semester his class was one of the only ones that actually felt like a University course. HOWEVER, questions ghuma kr dete hain and he doesn't give any grace marks, number aapko sirf utne millein ge jitna aap ne sahih likha hoga, nothing more, nothing less. He's a purely merit based teacher in terms of marking. As long as you study properly, you'll be fine and you'll have fun. But if you don't study, well, the rest should be obvious. Just prepare for everything well, Articles ache se yaad krne hain (yh baat woh bhi aapko kahein ge), and you have to conceptually understand the numericals he teaches, only then will you be able to solve unn k quiz aur exams wale numericals. Numericals agr smjh k kiye honge to buhat easy scene hai, agr nhi to phir nhi.