sir aap jo kaam kr rhe ho vo sahi hai pr abhi student ke kaha se pay kre video pr unke paas kaha uthney paaise hote hai?? ...maine aapka video title dekar fattakas se dekne gyi toh aap bata rhe app kr baarrme bhi waha tak bhi thik tha pr jab money pay krne ki baat aayi toh me kaha se pay kru .....plz make video for free that every student can see it's humble request to you🙏

I was wondering where can I get the oneshot pdfs of chpts after lens of science 1 and of science 2