Welcome to the board and the most addicting yet frustrating type of hunting known. You received good advise so far, as others have stated I will state it once again, practice, practice at all distances, practice from the ground, practice from different elevations. How will you know when you have practiced enough? When you bring your bow up and as you draw the pin falls right where you want it to with out you thinking about. You can never practice to much, one word of warning though, the second you feel your arm getting sore discontinue the practice for that day. The reason behind this is when you are tired your form will change and this can lead to bad shooting form habits which are hard to break.

As others have said, read all you can on your quarry and about bow hunting, any questions you have come here and ask.