Where can i download canon EOS 350D digital camera operating manual ?

Name of your Camera in US market is "REBEL XT"
Try This Page
http://www.usa.canon.com/consumer/contro...

And Also you can see EOS 350D reviews in http://www.dpreview.com

And http://www.canonusa.com is the canon official site in US.
Good Luck.
Bye.

www.canon.com

They have everything you need to know!