Lasso Tool
The lasso tool is used when drawing a free-form border around an object, it makes the edges smoother and works by clicking and dragging to trace the edges of a part of an object.
Paint Brush Tool and Paint Bucket
The paintbrush tool is a standard tool in photoshop, much like a real like paintbrush it allows you to draw on any layer using your mouse and can give a more hand-drawn and realistic look to your image. You can also adjust it to any setting, any stroke and any colour you like which you will see in my example below. Some examples of brushes are the highlighter, pencil, a graffiti style brush and many more. It is also sometimes used for calligraphy.
The paint bucket tool is used to fill an object or area of an image, much faster than a paintbrush could .
The paint bucket tool is used to fill an object or area of an image, much faster than a paintbrush could .