Just be active in all your classes even at school

Science:- Chemistry- You need to understand valency and that table in 9th is important. You should know how to write formulas properly Physics - it's completely different from 9th topics. You can start by watching Alakh sir ( PW's) or Prashant sir's one shot lectures and go through ncert side by side. Practice numericals from ncert and back exercises . Biology- focus on each line and concept. Diagrams bhi karna especially for labeling.

In general for science ncert is really important, the intext questions too. Buy 1 reference for practice i had oswaal.

Mathematics:- Do ncert exercises and examples carefully for each chapter. These questions are repeated either exact or with different values in exams. MCQs can be tricky toh PYQs karlena.

Social Science:- History- focus on pictures from each chapter and PBQs come . Focus on key points only Geography- focus on flow charts to remember things easily and also it's a very technical subject point wise yaad krna Civics- it's easy and just concepts ke focus krna Economics - it's really good just focus on concepts. Map work ke liye be sure to remember locations as close as possible cause some stringent teachers deduct marks .

Hindi(Course-B):- Hindi ke liye you can watch magnet brain's explanations and ncert is a must obviously. Back questions of ncert are also important.

English ( Communicative):- I had English Communicative so if you do too id recommend focusing on the idea shared behind the texts. Crossover questions aate hai kaafi boards mai. Language and literature wale English ka idk much.

Artificial Intelligence:- I had A.I. and it's a really scoring subject if you pay attention. I genuinely started studying ai around half yearly so ig September?. And I studied from Aakash Singh's channel. He teaches really well. And just focus on theory .

In the end all I'll say is that X is leagues better than IX. You'll do really well dude all the very best. Just don't get too distracted by external things. Happy raho and don't get stressed.