I tell every incoming batch the same thing: LinkedIn, YouTube and Instagram are your resume now. Nobody's waiting for permission to check your online presence before deciding whether to take a meeting.
The version that doesn't feel fake
Post the build, not a highlight reel. A short update on a project you're mid-way through, including the part that's not working yet, reads as more credible than a polished announcement — and it's easier to actually write, because you don't have to invent confidence you don't have yet.
Consistency beats production value
A rough weekly post beats a polished monthly one. The algorithm and the audience both reward showing up, not the editing quality of any single piece.
GitHub is not optional
Whatever platform you post updates to, the actual proof lives on GitHub. An empty profile says something too — usually the wrong thing.