To follow Free Online Foundation Course UPSC CSE Prelims - Use this Schedule and Follow AICSCC TN Channel Regularly
https://drive.google.com/file/d/1jhioOykPJTktKs8I8dlm8ptVyLCUJP-y/view?usp=drive_link
To Download pdf
https://drive.google.com/file/d/1rvkI6QT7sL0p1kC_f-P4FNE6rPkSzGHm/view?usp=drive_link