gang somebody help me in CS 💔💔 like kahan se padhu kidhr se resources laun

ig meri CS achhi hai mere pb1 mei toh full the lekin pb2 mei 44/50 hogye i rly need 50/50 taaki CS can replace maths in my final percentage 🙏🏾🙏🏾🙏🏾 can someone PLEASE help me with this? i feel like mere paas jo book hai vo bohot outdated hai 2019-20 wale syllabus wali hai so yeah idk mai kahan se padhu aur mujhe realise hua ki HTML ke kaafi tags toh iss book mei hai hi nahi 🥀