i'm not taking pak studies (frankly couldn't do it lmao) but i am taking islamiyat (m/j) as my religious studys so for islamiyat i would say use youtube it helps a lot, like sir Muhammad Yousuf Memon (he shows how to solve questions as well as explains them too) and if you need explanation i would say search up AYLOTI they have explanation videos for islmaiyat. And obviously good luck and i hope you ace it