Started a tiny blog explaining what I learn each week. Didn't expect it to help in interviews.

I began writing short posts mostly to force myself to actually understand things instead of copy-pasting. Nothing fancy — 'what a hash map actually does,' 'why I kept hitting this error.'

Turns out explaining a concept out loud in an interview got way easier because I'd already put it into words for myself. Bonus: two interviewers had read a post and it became a whole conversation. Strong recommend even if nobody reads it at first.