Please check these simple videos.
Those are my chrome extensions.
Hi there. What do you mean by simple "hello world"? In console or appended somewhere on the page? Or maybe some simple application that falls into "hello world" category? Anyway, feel free to hit me up so we can talk mLisää
I can do the job in just 1 hour, if it is just a hello extension. If you also want me to publish the extension on chrome, that is chargeable service. So you will have to pay according to that.
mail me you arLisää