What is this breadboard? How do you use it?
You can click on the picture to enlarge it. The two rows on either side are marked + and -. The connect top to bottom. You connect the 3.3V or 5V to the +. You connect the ground or gnd of the device to the -.
In the center of the board you have a, b, c, d, e and f, g, h, i, j. Each row is numbered on this breadboard 1 to 30. You can buy a larger version of it. a to e and f to j are connected across each row. The center separator splits them.