hi dimanya                                                                                                    

you can prepare for quantitative ability section and gdpi for atma by online like youtube or many site have content for atma prepartion or you can buy a book for preparation

https://www.ssim.ac.in/blog/how-to-prepare-for-atma-exam/

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=8&cad=rja&uact=8&ved=2ahUKEwjK5b2k5_PiAhVFKY8KHRyTBkEQFjAHegQIBBAB&url=https%3A%2F%2Fmba.aglasem.com%2Fhow-to-prepare-atma%2F&usg=AOvVaw3wKKrf_v9PRDfcE6p2Rha9