Adjunct ingredients are fun to experiment with, and absolutely essential to creating some styles of beer. I see orange peel (as well as coriander) used most often in Belgian Wit style beers that are great for summertime drinking. For an IPA, there's really no need to add orange zest unless you really want that "over the top" orange flavor in your beer. Most of the high alpha hops strains have quite a bit of that bitter grapefruit/orange rind flavor. Since you're new, i'd google around for some recipes on beers that have the flavor profile you'd like to drink, and mimic that recipe in a small scale batch (5 gallons or less, maybe even a 1 gallon batch). Once you have the recipe down, modify it as you'd like or scale it up for a larger batch if you want more of that type of beer to drink. Brewer's software, like Beersmith 2.0, is good for scaling your recipes to the size you need. It'll do all of the math for you to convert a 5 gallon recipe to a 1 gallon recipe, or vice versa.
Beer so good, it's frightening.
2014: Seven Heavens Series One: Vilon, Mystic Melomel, Skeeter Pee.