I'm curious - what has gotten you interested in OS development?
For me it was when I was programming a compiler - I learned some assembler for that and when I learned about system calls, I wondered how they worked internally.
Looking for answers to that, I found osdev.org and lowlevel.eu and the Hello-World Operating Systems there made me curious. I wanted to try making my own Hello World OS - then I wanted to read the keyboard - and once that worked, I couldn't stop anymore