Practice is the most important thing but the NAFA course was focusing on the practice (as of do this do that, repeat a few times) but doesn't teach why to do things (the thinking process) at all (and thus most students won't be able to proceed alone), let alone theory (process control, chemistry... Etc) or more advanced topics. I think could have been more efficient but I guess for most students it's just one of the modules, don't care so much.
What would be nice is a second step: lots of practice, weekly assignment to do on your own, critique and tips to improve. Could also get in theory a bit, but that can be done alone from books.