You should ask yourself what do you want to build? If you just want to build a static website then HTML, CSS and basic javascript with a sprinkling of photoshop/gimp. If you want to build a web app then learn HTML, CSS, Javascript and then ruby, and then ruby on rails or Node.js. In terms of free resources get your feet wet with codeacademy then move on to freecodecamp. Oh and join codenewbie for support as learning to code could be frustrating at times.