Again, do not allow your puppy full run of the house.  Start with a room that is not too big or small, and that is easy to clean.  You can use a baby gate to keep them in the kitchen, laundry room, or bathroom to start with.  Some make use of the play pen for outings and or the home.  The key to training is first of all patience!  You must be willing to work with your puppy often without going beyond it's capabilities and age (after all, you would never expect an infant to talk, a toddler to write, or a young child to drive).  Second is routine.  Make sure you use the same keywords for each activity.  Don't try to teach many things at once.  This will only confuse your poor bewildered puppy.  Go with one thing until done well and easily.  Cockers are very smart; regardless of the myth and bad rep they've gotten.  With patience and routine they should have no problem doing a variety of things with a willingness to please.  It is as much a training for the owner as it is for the pup.  Like people; they are all different in personality; what works for one may not be as effective as with another.