You could also pick up a Wilton starter kit at Michaels or Hobby Lobby. Their starter kit 1 will give you what your looking. As far as chocolate goes I would imagine it would be the same. Creme? What cremes are you speaking of?
Just normal whiped cream. I have searched the net but all i could find was pictures of designs, nothing to show me step-by-step of how to start. I should have said for the chocolate, i will be using a paper cone.
SugarCreations is right - go to Michael's and ask for a Wilton cake decorating book. There are quite a few, all with step-by-step instructions.
Another thought - I believe there are a few videos out there that show you the process. You may even be able to find something like that at your local library.