Yogurt making is not very difficult at all. It just takes milk and yogurt starter or a 1/2 cup of plain yogurt with active cultures. You can then add sweetner and flavor or fruit after the yogurt is completed.
Here is what you will need to make your own yogurt:
First, measure out a quart of milk and put into a pan and heat on medium until it reaches 185 degrees.
When it reaches 185 degrees, place pan in a cold water bath to cool it down to 110 degrees. Once it cools to 110, add your yogurt or yogurt starter and stir well. Put the lid on and place jar into your yoghurt maker, crock pot(on warm)or into a cooler with warm water and leave it sit for 8 hours. It needs to stay as close to 110 degrees as possible for the 8 hours. For this reason, I like the Salton yogurt maker--no worries about temps.