To me the best method is the one that has the least chance of disturbing young fragile roots.
DO:
1. Use a 1 gallon pot filled with fafard potting mix. EDIT: I would actually use a mix of 50% fafard potting mix, 50% coarse perlite.
2. Moisten the mix but leave it for a couple days so it's not too saturated before putting the cutting in. Getting the right level of moisture is key here.
3. I would make absolutely sure I put the cutting rightside up :).
4. Insert cutting so that one or two nodes stuck out the top of the pot, with the rest under the soil. If it has more than 4 nodes and is more than 10 inches long, I would consider cutting in two.
5. Put a plastic food storage bag over the top to act like a mini greenhouse. I would keep it at about 75 degrees, i.e. a furnace room or something like that. I would check on it once or twice a week to make sure moisture level is good, and to air it out.
6. Once leaves start to show, put it under a light. Try to keep the baggie over it until roots are observed coming out the bottom of the pot.
7. Transplant to a 2+ gallon pot after it's evident there is a very strong root system. This usually takes about 60 days for me, but results vary significantly
DONT:
1. Use Miracle grow organic potting mix. I am convinced this leads to fungus gnats, which will severely compromise your cuttings chances of survival.
2. Pull the cutting out of its mix to examine how it's doing. This will damage roots. In fact, don't touch the cutting itself for at least a couple months.
3. Overwater.
4. Worry if leaves fall off. Frequently the leaves will develop before there are enough roots to support them. The plastic bag and humidity will help this by reducing the rate of moisture loss by the leaves, but it won't entirely eliminate it.