Use of Lasso Tools in Photoshop
Lasso Tools in Photoshop are selection tools. Place the mouse over the Lasso Tool in the tools panel and right click then you will notice there are three Lasso Tools in Photoshop. To activate Lasso Tool, you can press L on the keyboard.
Regular Lasso Tool
In the tools panel activate the Regular Lasso Tool. Place the mouse pointer over the Lasso Tool and right-click to choose the first one (Regular Lasso Tool). With the Regular Lasso Tool, you can draw freehand selections around an object or area in an image by clicking and dragging the mouse. It creates a loop shape. When you connect the starting point to the ending point, the area inside the loop is selected. You can add extra areas with that selected area by choosing "Add to Selection" in the options bar and dragging with the mouse. If you mistakenly selected extra areas then you can subtract those areas by choosing "Subtract from selection" in the options bar and dragging those areas with the mouse. You can copy, cut and then paste it on other documents for manipulation. Besides this, you can remove the background of the selected area.Polygonal Lasso Tool
Magnetic Lasso Tool
In the tools panel activate the Magnetic Lasso Tool. Place the mouse pointer over the Lasso Tool and right-click to choose the third one (Magnetic Lasso Tool). To make a selection click along the edge of the object you want to select, and Photoshop will automatically create a selection that follows the edge of the object.