I use Picasa and it is free! I just joined this team as I have thought of selling some of my photographs on-line. I just use a Sony point and shoot camera as I am not a camera whiz and understanding.
Picasa is great for cropping and watermark, straighten, and other tools.
I joined to learn about sizing and understanding more about how to make my photos the best they can be with my knowledge.
Smiles,Cyndi