Is there an easy and free way for me to host a website specifically for displaying college notes? Some of my peers have created a repository of notes and content and stored them in a shareable Google Drive folder. I, however, wish to share my notes in a format more practical than just a cloud storage directory, similar to those of code library documentation sites.

My requirements are as follows.

1. I want the website to allow categorization of notes into courses and units or deeper if necessary.
2. The notes should support file formats like PDF, images, markdown, HTML or a combination of any of them.
3. I should be able to add and edit the notes from any device at any time.

Is there any pre-made software for this purpose or do I have to create a website and a workflow myself? I am fine with either of them as long as the above requirements are met in a convenient manner.

I have a Linux (Mint) laptop and a non-rooted Android (13) phone which I take to college, and also have a personal and a college Google account, both of which are essential. The emails of both the accounts are nearly identical, only differing by their domain name, and I am afraid I may mistake one for another and end up storing data in or using the incorrect account for a task. What measures can I take to keep both accounts isolated and ensure I am aware of which account I am currently using without resorting to purchasing separate devices for each account or rooting my devices?

Do note that this post only addresses the issue of keeping separation between the two accounts, and not directly the issue of invasion of privacy of use of these Google services, which is why I didn't ask this question in c/privacy.