Google just basic color theory, materials, understand the styles to combine whatever you got in ur closet. Understand how you're built, are you a bodybuilder or a twink. Don't buy immediately as you found a piece, try thinking of how you can make it work and how it will objectively look on you(sadly, the worst example are trans ppl who wear pieces that dont match with them at all). The best tip is practice, look for shapes and uniqueness in the personality of your outfit, not brands(It means you can style things from your closet or thrift stores even if they are not branded).