Of course I’m going to cover Filters! You can’t learn Adobe Photoshop and not learn about Filters.
The picture above was created by using the Filters. They’re very easy. In fact you just have to have a picture and then go to Filter > Filter Gallery… (yes, the ellipsis one). The pictures above were manipulated and changed with Filters.
The order of filters used on the top from left to right are: original, Note Paper, Watercolor.
The order of filters used on the middle from left to right are: Accented Edges, Cutout, Paint Daubs.
The order of filters used on the bottom from left to right are: Sprayed Strokes, Patchwork, Glowing Edges.