Hi there.
i am new to unity and got a little question.
i made a little platform in googlesketcup and imported it in unity
now i want the platform to rotate like this:
only the bigplatform nothing else. so i can choose the own speed by holding q to get faster and a to slow it down.
You would just have to make a script with one of these functions, and rewrite them to fit your purpose. Then find the object you wish to rotate, and attach the script.
Dependent on how much of a beginner you are. I would suggest taking a tutorial such as such as this beginners guide on TutsPlus. It is done in Javascript. In the long run, I would however suggest picking up C# as this is much less restrictive.