Creation of website
Finally, I started making my webpage, which is far from complete yet and in particular it could have a nicer CSS styling. Likewise, it contains very little content at the moment. Hopefully, over time it will grow and become nicer.
For making the website, I found the very interesting site-generator project. It allows you to write the texts in your favourite editor in various formats (which can change freely) and putting everything together. Including equations is also very easy due to MathJax.