I am only a level 11. I just walked around the whole time I was playing yesterday. Ran into a few giants. Jumped off a waterfall to avoid the 3rd and last one. (I killed the first two from a distance)
Then, I headed out towards Riften (from Whiterun). It was a long journey, I crossed through the mountain pass and ran into alot of Imperial Women going to execute a prisoner. I set the prisoner free and wasted the guards, then wasted the prisoner because he didn't seem grateful enough.
I soon forgot I was on my way to Riften (to join the Thieve's Guild) and just started hunting Elk.

Love this game so much