Can I make videos on the game I make & if so can I post it during or after day 1? Or if I worked on a game for day2 does same thing apply? Or do I wait until jam is over?

I've got no clue in reality, but if you're recording footage through to the end of the thing, it might make more sense to cobble it together then! I don't think there's anything stopping you from posting every day, but honestly it may work better if you stuck it all in a video afterwards. (it's what I'm looking to do!)

There really aren't any rules on the subject, from everything I can tell, so do what you will! :D

If there is a chance that a dev will see your video, don't post it, there is meant to be NO communication between devs.

My own plan for this is to make a video immediately after uploading on each day BUT NOT RELEASE THE VIDEO UNTIL THE JAM IS OVER

Avoid even the appearance of impropriety. No communication is allowed so do not even take the chance that someone might see it until after the Jam.

Alright I can wait thanks