I got a dog food for Cinnamon that had the first ingredient as beef, she doesnt seem to like it though, how do I know what kind of food to buy that she will like and that will be good for her?  Does anyone have any suggestions?

Go back to what ever you fed her before changing to the one she does not like.

The one I had before wasnt good for her, that's why I switched, it  was just a cheap dogfood we got her so that she would have food until our next paycheck, getting Cinnamon was a spur of the moment decision to save her life, so we were unprepared in a lot of ways.

In which case give her 90% of the old cheap food and 10% of the new, then slowly increase the new food and reduce the cheap one.