Just as a general comment, the more practice you get with it, the more it becomes a second nature. It probably took me all of about 5 minutes to download your picture, import it into aperture, do all the edits I mentioned, then upload it to my flickr and post. It probably took me at least twice as long to describe my edits.
The biggest key, really even more than knowing 'how to do it', is quickly recognizing what needs to be done. The "how to" is generally fairly straight forward. It's knowing exactly what is needed to make the photo look the way you want it that is the challenge. This is sort of the digital equivalent to what they used to call 'reading the negative' in the old days of film. Being able to look at an unprocessed image and knowing exactly what first edits to make to get you in the ballpark, then further refining when you get there, and so on.