If you are trying to learn the software and surfacing then i suggest spending the money to learn it at a faster rate. doing it on your own is something that is achievable but having a network of surfacing guru’s will be very helpful. Note that a Alias surfacing guru while not able to tell you what buttons to push in CREO can definitely provide you with a deep understanding of the creation of complex surface and work flows that would translate.
i.e I learned complex surfacing in Euclid (yes im dating myself) that knowledge allowed me to quickly pick up Alias where i learned more about surface development by working with people dragging bondo and sculpting forms, once i understand to the new software “language” this then translated into what i was able to achieve in SolidWorks -