I have found a step by step guide on wikihow, and here are some top tips!
1. 24 pictures equals one second of film. It's best to take two pictures of the same shot, so you only require 12.
2. Set up a good source of lighting. It might be a lamp or a flashlight. If your light is flickering, you need to shut off other sources of light. Close the blind, or curtains etc.
3. Move the figure bit by bit - very small movements each time. It may be the entire body if the figure is walking, or it may just be an arm, head or leg. If you are moving only one body part and you find that the figure is tilting or threatening to fall over, make use of poster tack under the feet or other area touching part of the set.
4. Import the pictures into the desired program. Make sure the pictures are at a very small duration so they flow very fast.