With Picasa you can import a picture, straighten it, color correct it, crop it and resize it in under a minute. Here I'll run though these main processes, but there are still more tricks to play with if you want to check it out.
Step 1: Download Picasa
Upon installation, Picasa will catalog all of the images on your hard drive. You can take some time to organize and rename these folders if you want. It's a fun way to kill an afternoon, but let's move on to the processes we're after.