I need to quench my thirst for knowledge and learn something new just for the sake of it.
I’ve already learned:
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Equations and pivot tables in Excel
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Vector graphics in Inkscape
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Music mixing in rekordbox
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Personal VPN on a raspberry pi 4 with OpenVPN
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LAMP stack web hosting
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Streaming & video capture with OBS
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Manual & automatic backups with FreeFileSync
Things I’m open to:
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FOSS (even beta) or free-as-in-beer software
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A high or low learning curve
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Tools for niche fields that I’d otherwise have no reason to learn


I know you said software, but I would like to suggest a musical instrument. They still require learning a new language and typically provide a huge level of self satisfaction. A cheap keyboard or guitar can provide literally thousands of hours of study.
Take up the synth, but using software on a computer instead of a keyboard. Learn how to write MIDI. 😌
Or get a keyboard (or digital piano), but hook it up to your computer via MIDI and then compose music with it.
It’s a lot nicer using a real keyboard than trying to input notes with a mouse.
I usually used the computer keyboard when I messed with that stuff cuz I couldn’t get a real one back then, just so I could still feel somewhat like playing a piano. 🤣
The world needs more “tracker tunes” :D
You can combine the two with something like Overtone (programmable synth) or similar