At SiteGround tutorials there is a very good Mambo tutorial on how to install Mambo addons, how to add Google Adsense to Mambo, adding meta info, etc.
http://www.siteground.com/tutorials/mambo/

There is a list with very good mambo modules and components and download links.

Also there are Zoom gallery install and setup instructions.

yeah siteground have great joomla and wordpress tutorials also

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