I had been asking on a forum about moving projects between two machines, and Ian Wood from the site Aperture-Assistant sent me a bunch of links, so I thought I would post his list here :

Forums:
http://discussions.apple.com/forum.jspa?forumID=1092
http://apertureprofessional.com/forumdisplay.php?f=1
http://www.flickr.com/groups/aperture_users/discuss/
http://forums.dpreview.com/for…forum.asp?forum=1017 – this isn’t Aperture-specific but has quite a lot of Aperture-related threads.

Articles and blogs:
http://apertureprofessional.com/bloghome.php
http://apertureprofessional.com/articleshome.php
http://digitalmedia.oreilly.com/aperture/

Note – I write for both the AUN and O’Reilly, so may be a bit biased…

http://photo.rwboyer.com/
http://www.bagelturf.com/aparticles/index.php

Video tutorials: http://www.apple.com/aperture/tutorials/
Plug-ins: http://www.aperturepluggedin.com/ & http://www.apple.com/aperture/resources/plugins.html
General list of resources: http://www.apple.com/aperture/resources/

Scripting:
http://www.apple.com/applescript/aperture/
http://homepage.mac.com/jlarson7/
http://homepage.mac.com/brettg…leScripts/index.html
http://aperture-assistant.com/…ows-and-applescripts – this is my own site.

Lastly, you can find a ‘presets’ Project on my Aperture Assistant site: http://aperture-assistant.com/freebies