My friends are into Magic and just got me involved, i want to make a green and white deck and im not sure how?

Usually when you create a deck, you stick to a certain amount of elements and a certain race or species of creatures. Since you want to make a white/green dual deck, i suggest you go buy 2 Simic Growth Chambers which are land cards that add 1 green and 1 white mana each turn. (very useful). Also, you should always have a ratio of about one fourth to one third of your cards be lands or manas. So in your case, about 10 plains and 10 forests. You can have less forests and plains if you include the simic growth chambers. You should also keep an about 1 to 1 ration of noncreature spells to creature spells, but it varies depending on what kind of deck. Since you dont really have a set creature type, i would suggest buying more cards, or just putting a bunch of random cards together. If i were you, and I didnt want to spend money, I would start by using the white cards for a cleric deck. First put a Sanctum Guardian and a Oriss, Samite Guardian becuase they have similar effects and can block damage. I would use 2 Daunting Defenders to back up all other clerics, 2 blessed Orators to boost up a little other cards, a Zealous Inquisitor to add a little twist and surprise, and possible one or more of the following : Angelic Blessing, eager Cadet, Noble Templar, Venerable monk, Monk Realist, Glacial Plating, Apothecary Initiate, and other cleric cards or powerful noncreature spells you have. For the green part, go beat, and use your Keeper of the beast. Put about 2 Needleshots, and a Leery Fogbeast to add some power and block flying, and other beasts you seem fit. Since you dont have many choices ininstants or enchantments or whatnot, just put whatever works best and is more powerful.