Well, you don't have to soak them. There are many different methods, but none easyier than the infamous "throw it in the soil 'n water" method. Do this and wait, or put it in a damp paper towl in a sealed ziplock on a warm place. OR soak it in water until either a tap root appears to be 1/4 inch long or the seed sinks. When it sink that means it is saturated with water.