In Photoshop Elements, you use layers to change, sharpen, and bring out colors. Action sets create and adjust these layers for you automatically. That is especially helpful in the beginning while you are learning (and by you, I mean me). Here is an original, straight-out-of-camera shot and the picture when action sets have been applied to it.
The action sets are fun and really help if you have a half-decent picture but terrible lighting. I've also removed scratches and bruises from faces, juice box squirts from tee-shirts, and ice cream from chins.
Two great resources for action sets are The Coffee Shop Blog and The Pioneer Woman. I think the best instructions in how to install these come from Rita at The Coffee Shop Blog.
All fonts used in the pictures come from Amanda. There are literally hundreds of fonts on her sites and they install very easily (click them once downloaded and they install themselves).
Oh, one more thing...everything I've mentioned here is F-R-E-E!