Lasso Tool: The lasso allows you to select a part of the photograph freehand. Once both parts of the selection have intersected, that part of the photo will be selected.
Magnetic Lasso Tool: The magnetic lasso tool works very well with photos that have high contrast. It will act as a magnet to outline pixels that match the color of what you are selecting. The magnetic lasso is found by right-clicking the Lasso tool icon.
Polygonal Lasso Tool: The polygonal lasso allows you to select a part of the image using straight lines in whatever shape you’d like. This works well if you have a specific shape in mind, or if there are lots of geometric shapes in the photo. The polygonal lasso is also found by right-clicking the Lasso tool icon.
Magic Wand Tool: The magic wand tool is used to select pixels that are the same color. You can set it’s tolerance (how “off-color” the pixels should be for the wand to still select them) using the top bar of your screen.