Please help me

Currently I am a college going student and I am very passionate about stock market so at end of each month I save some money to invest in a stock market but rather than taking advice from friends like which stock i should invest or not I decided to learn this by own so can u all please suggest me which ratio i should consider while searching for stock or u can give me any advice while searching for stock or advice while investing any help will be appreciated. Thank you 🫡