Once I had the culture I made some strong black tea probably about 2-4 quarts of it (I also added some ginger tea). To that I added about a cup of sugar, this is what the culture "eats". I waited till this cooled and put it in a glass jar with the "mother" on top of it. Once this is done and covered with a cloth and rubber band I put it in a dark place for about a week or two. When you do this a "daughter" is born which is basically another culture that you can give away or throw away. You will get a new culture growing for every batch you make.
Some things to be careful about:
-Always use glass, wood or stainless steel with your Kombucha stay away from plastic.
-Make sure everything you use is sterilized.
-I had a problem with this attracting fruit flys but I scared them away with this
-I would recommend researching more on this as with any type of fermentation it can be dangerous if done incorrectly.