What are all the Necessary things that a new web developer needs to Learn Before creating his First Website?

I and my friend are deciding to take a step in Web Development and Creating a new Website in which some features are complex ! Please tell all the minor and Major or advance things we need to learn for Front end and Back end Development ! We are new to Web Development and want to ask rather than Javascript,html5,css3,bootstrap,php,mysql,jquery is there anything left we need to learn to make our website a fully interactive and functional one !