What steps to learn/ take to be a crypto coin developer

So i want to learn how to code/ program to make a token/ coin or other useful things to create a unique project but what steps should i go through first? should i learn to make a website then java script then an app or what ever ? what knowledge if useful for the crypto industry? and what steps should be taken to get that knowledge/ practice. i also want to understand blockchain better by also learning to create my own blockchain