I’m a huge fan of the Digital Photography School and subscribe to their newsletter. The weekend photography projects they assign are fantastic for those who want to improve their skills.
I also highly reccomend their e-book on travel photography, Transcending Travel, which you can download for about $20 from their web site.
Here’s a link to their tips on how to take a photo out of a plane window: http://digital-photography-school.com/how-to-take-a-photograph-out-of-a-plane-window
I’ve already posted some of my plane window photos on this blog so here’s one of Conny’s. It was taken on the way back from Thailand and it’s of the Palm Islands off the shore of Dubai.

Plam Islands
If you want to see more of Conny’s photos, page through his travel book of Thailand in our Sample Book section on the SmileBooks web site: http://www.smilebooks.com/travel-photo-book.php

Good points. Will need a good amout of time to examine this writing!!