Can you tell me how to plant a baby elm tree and where to plant them, etc?

I went to a nursery and bought me an elm tree and planted it by my drive way. This was about 2 years ago... about a year ago, a friend of mine gave me a baby elm tree in a pot. It needs to be planted, but I can not quite find a right spot in the yard. Plus how to re-plant them from pot to a ground. Right now the leaves started to look soggy and sad. I have been keeping it in a pot out side where it gets full sun all day, and watering it about once a week. I just went to get me a product called All purpose miracle glo product form walmart.