There are two options for you as a HSU student- you can create a site with Google Sites (also available directly through Google for anyone) and you can create your own site using the school's Web servers (this requires more advanced web development skills, but is a great way to learn!).
Making a website accessible is a must if you are interested in creating something useful to your users. This guide and training module will teach you the basics. [Completing this training is required if you want to create a Google Site through HSU]
Your HSU network folder is the other way to upload your site files to the Web server. If you already are familiar with using your U: folder, you can simply transfer files to your public_html folder (e.g. if you save an HTML file named 'index.html' to your public_html folder, it will show up when you navigate to http://users.humboldt.edu/your_username)
If you want to create a site on the HSU Web server, you will need to learn a bit about HTML. These eBooks can help you get started. [Note: older HTML books will be out of date and should not be used- be skeptical of anything older than 5 years or so]