CrPC aur BNNS ke study material ke liye kya padhna chahiye?

Bhai, main 3 saal se ye hi padh raha hoon, aur abhi tak kuch nahin samajh paa raha hoon. CrPC aur BNNS ki study material ke liye maine kai books padhe hain - Durga Das Basu, V.K. Maheshwari, H.N. Pandey - lekin sabse achha study material kahan se find karein? Maine online courses bhi try kiye hain, kuch video lectures jo UPSC ki website par uplabdh hain, lekin usse bhi achha lagta hai koi aur vishesh content milti jisse main samajh aap. Koi vishesh notes ya video tutorials recommend kare jo main try kar sakun.