You can get a Norton combination stone from home depot, or Lowe's for about $25 or so. It is coarse on one side and fine on the other. It is as close as you can get to an old Arkansas stone for the price. For a strop, you can use an old leather belt or the side of a leather boot. Or just strop on your jeans. You can get by without using any compound. My grandfather never had a strop or any compound, he just used his boot to strop on, and you could shave arm hair with any of his knives.
Bottom line is to make do with what you have until you can afford to upgrade to something else. Believe me, whatever you are cutting won't know if you sharpened your knife with the bottom of a borrowed coffee cup, or the latest $700 whisbang sharpener. Good luck and enjoy your knife.
Blessings
Omar