That "shiny" particle at the gills? Video is quite bad quality can't really see it well, do you have a better quality photo?
White spot could be ich and many other things as well, a piece of gravel attached temporarily or a different parasite.
Even if it's ich, relax, its part of the journey. I met with ich in a similar situation, brand new to hobby, 2nd day and white spot. After some franctic reading I created a plan which I was happy with.
I suggest the same, if something bothers you, in this case white spot, read up on it and create a plan based on whats available, so whatever happens you know what to do.