*Looks at user title "I don't like ads"
More seriously. No matter what you're writing, the best way to get new readers is to write. Every time you write and release a chapter you end up on the latest updates list which is the way most readers find new stories.
You can also advertise your story around in places where it's allowed. Or put it in your forum signature to become a walking billboard for your story as you chat about completely unrelated things in the forum.
As for getting feedback from said readers, just ask for some feedback in the bottom author note of your next chapter. You can also ask for reviews and ratings, but I'd advise against that until your story is somewhat long so they have something to actually review.