Thank you for blaming me for your procrastination. Of course there was no way for you to know that registration for fall would happen before the day classes started. This makes logical sense.
As far as picking courses, students are able to see exactly the same information regarding course availability that advisors can; if you see that everything you want to take is full, that's what I will see as well. The college is currently in development for this secret page, magic button, and/or fairy wand that I can use to suddenly find classes that are open and available just for you, because you are, in fact, special. However, you do not yet possess the knowledge of the secret code to access these options, so I am afraid you are not THAT special. You will just have to register early for spring.