I installed Ubuntu for the first time yesterday and the process went very smoothly, better than Windows!
1. While navigating around, I came across a few area that didn't behave well so I wanted to report them but I didn't see any buttong/link to do so if there is such a method, were would I find it?
2. When I laucnhed Firefox:
a. I couldn't find the menu options, were is it?
b. I maximized then restored the program and after I moved it around bit, everything was replaced by a black screen. It had some text (two columns) in the center and an "OK" button in the upper right. Clicking this kind of restored me back to the OS but I could only see the wallpaper, the sidebar was gone. I had to do Ctrl-Alt-Del to get out.
3. In the Personalize dialog, where you change the wallpaper, in the bottom right were some options and I clicked on the second button (forgot the name) and the program became unresponsive for a minute and afterwards I could continue.