I still prefer to have a chronological hierarchy for my "projects". Other prefer a subject based approach.
I create a Year Folder from the + sign with the drop down arrow.
I then click the import arrow.
All of my files are stored by date created anyway so I don't see the need to change my file structure. It's the way my mind works so I'll stay with that for my organizational purposes.
In the import panel:
I keep my original master file name
I adjust the time zone if needed
I add my caption
byline
copyright notice
city
state
country
general keywords that will go with every image in that project
click import all.
I label the project YYYYMMDD-Broad yet Brief Title so they maintain the file structure.
I make sure the import arrow is pointing to my year folder so the project will reside in there so I can twirl it closed and my list doesn't get too long for the screen size. I can twirl them open as needed.
I go in and keyword the names of people and objects etc ... my command clicking down the images for that project.
I then click on the + w/ drop down arrow again in my projects panel and select new smart album. I think you have to be in the libraries all photos for this to work for all photos. (not positive about that)
I have already nested keywords in the keywords HUD that I use in folders so I can twirl open as needed and they aren't a scattered mess.
I created a blue folder called smart albums
within that folder I have blue folders that I've titled for images most important to me
people>
family
friends
relatives
places
one album for each city
I select the keyword I want for that smart album
In some cases it's a city and in some cases it's a person.
I made a smart album for my daughter so every single image I have of her will be in one location.
I beginning to think of aperture as "the google" for my image library,
Once it's all set up it will be as simple as doing a google search to find anything I want to find provided I keyword on import and again for individual images.
I signed up for the Safari Books Online and am reading the book recommended on this thread. Apple Pro Training Series for Aperture 2.
It's showing me that I need to rethink the order I'm doing things and may add culling earlier in my workflow. Why keyword single images that may wind up in the trash bin?
I recommend that along with the podcasts etc ...
It's a seemingly simple application but I think that the input is going to determine it's ease of use going forward.
Training is necessary for this application. The user manual is good but yawn ... The book is a much more interesting way to learn this application and absorb what it can do for you.
I had always felt like a slave to my image management software and now I'm finally beginning to feel like a master.
Good Luck and Have a Great Time!