Here you can find more resources about working with HTML+CSS.
An open source HTML5+CSS3 editor with Live Preview (in Chrome) is Brackets.
Since in 2015 it is easier to develop a website from a framework rather than from scratch, learning from my own Fab Academy in 2012 I created an MIT-licensed template based on Bootstrap but with more technical things already set up for a typical Fab Academy website.
It is not meant for being used as it is, but for being modified into a personal website and for taking inspiration from its solutions for other templates. I did not touch the style from Bootstrap for this reason, I only tried to solve some typical Fab Academy issues. So, please note that this doesn't save you from:
You can download it here: https://github.com/openp2pdesign/FabAcademy_Template/releases