1. You use absolute path references (MyMachine>MyFolder>MyOtherFolder>MyDoc.html
2. You use a web server.
In my experience, this one is by far the easiest. Between new tools like Nodejs which allow for simple servers to any of the modern development environment tools like Mixture.io, it's a pretty straight forward process. WAMP, MAMP and XAMPP are great but not neccessary for a static site.
If you just want to preview your work, have you considered Brackets? It's Adobe's own open source code editor that connects to your browser.