It is easier to see the second sun when the light is diffused in the morning and evening. Look for a ball about 1/4th to 1/5th the size of the sun. It will be around the bottom of the sun and too either right or left depending on your viewpoint.
Some suggestion for spotting it can be found in the body of ZT.
Soon it will be visible to the naked eye and as the time for the passage nears it will loom big enough that nobody can miss it.
It is a huge magnet and it is pushing earth, a smaller magnet, around.