I have a house with a 200 amp service. All of the breakers are in use. I want to create a kitchen/washroom in my basement. I need enough amps for a washer/dryer, stove/refrigerator, 8-10 lights and plugins. I don't thing a 60amp double pole breaker is big enough, how do I install a 100amp subpanel?

how do I install a 100amp subpanel?What is your level of expertise with regard to electrical work.

From the VERY broad nature of your question I am inclined to say hire a pro.