For my photos that I edit, I use Picmonkey. It's free and really easy to use. They have a lot to choose from too.
Here is a photo that I didn't edit.
I didn't like how washed-out it looked. So, I went on to Picmonkey just to play around with it some.
I'll show you what I did.
First I went into exposure and took the brightness down to -34.
It already looks better! But I did even more.
Under exposure again, I went into shadow and brought it down to about 30-35.
It gives it the kind of look they have in the photography studios.
Next, I went to "Effects" and chose the "Dusk" setting at 30%. It kind of gives it a Sepia look.
Then to finish it off, I cropped it.
How do you like it? It doesn't even look like the first picture I showed!
I love Picmonkey.