If you are going to paint your china cabinet, you need to verify what material it is made of first. If it's made of wood, you'll have to do some light sanding. Don't worry; you don't necessarily need a sander to do this. You can just grab sandpaper by hand and rub it gently. Scratching up the surface a bit helps the primer stick to the wood. After you apply a coat of primer (if you so choose), use whatever brushes or rollers you are most comfortable with to paint each of the pieces. Always take off doors and take out drawers if you want to do the job right (half the time, I don't).