Ordering the featured articles in Joomla 3.0 is a big pain! Its a pain to find the option actually. Once you get it, its a matter of seconds to do it.
Joomla Extensions are generally uploaded from the Extension Manager. But there are certain situations, when you wont be able to upload your extensions successfully. There are various reasons, bad permissions, not enough PHP memory, no file uploads activated in php settings, too large file, etc .