You should learn the basics of VBA, as much as I despise this language, I can tell you as a mechanical engineer myself, that you will stumble over countless excel sheets with VBA from your colleges and it’s good to have at least a rough understanding of what they did. Also it’s unfortunately the automation/macro language of many CAD-Systems (Catia, SolidWorks, Inventor,… to name just a few). Python with jupyter notebooks or julia with weave are also worth taking a look into it. They a both pretty good for calculations + documentation and drawing nice graphs. That’s what most of my collegues do in excel with VBA, but it’s much nicer to do in the two mentioned before.
My first own computer was a Pentium II with 300Mhz, 64MB Memory, an Elsa Gladiac Erazor graphics card and a 4GB HDD. I got it around the year 2000, it was a used computer from the company of my parents. Before I got this one I was allowed to play on the 286 and later the 486 which my parents had in their company’s office. My first mobile was a Nokia 6210 and I got it around the year 2001.