Couple things you can do as an alternative to rooting hormones if you are having a problem with access to them, however, any garden supply store would offer a rooting hormone as they can be used for a LOT of other plants, but I understand that in some parts of the world this might be difficult.
You can make a 'willow water' (google it for how to) if you have willow trees locally, but if not you can try an asprin/gallon of water and I have heard of honey as well. The teas are used to soak the cutting and soak the medium.
A few things I have found helpful is getting your room temps comfortable low to mid 70's F but keep your roots warm, heating pads help with this a lot. Keep the humidity high for the first two weeks, you don't want to see wilting as this will decrease your chances for rooting. This is your most important thing to get your plants to root sucessfully, IMO.