1. Site wasn’t properly reflexive for mobile
2. If this is a portfolio then i would remove a lot of stuff like “watch list” and “current obsession”. The focus should be on your work and future projects
3. Notes are ok for a start but can be improved. I think a “posts” or “blog” would be better section title, and the content should try to teach something you’ve learned rather than be the notes you took for a subject. The difference is that teaching reinforces your understanding of the topic. So pick something smaller from those topics and teach it. I wouldn’t redo you’re current notes necessarily, but going forward i would pick a more focused topic and teach.
4. i would then move the “blog” or “posts” to your front page to show the most recent content and then link to /posts where the rest of it can be found.
5. move your front page content to a more “resume” section that includes a section for the tools you know. And still think about the length/space of this page. Like a printed resume, too long is bad. So make sure it outlines things nicely

Overall if it was just a personal site id say its ok. But as a portfolio site you have some work to make it align with your goals. Good luck!