Help with rotations

I have been stuck on rotations for awhile now. How do I use transform.rotation or eulerangles. Why can’t I see the actual value for a quaternions and how do quaternions work?

Our very own @StarManta has written some sage advice on this timeless topic:

https://starmanta.gitbooks.io/unitytipsredux/content/second-question.html

And there are many other fine sources of this basic math stuff out on the interwebs.