First of all the word is college not collage. You failed to grasp that correction. Are you going to be as error prone while reading this advice?
IF you are allowed into training as a Marine Officer Candidate there are several programs of training available to you. You FIRST need to speak with an Officer Selection Officer Team. Those Marines are the recriters who will have all of the needed special info on officer training. However, you WILL attend the OCS at Marine Corps Base Quantico and you WILL be trained. Some programs (PLC comes to mind) break the OCS into two summers and I believe NROTC programs do the same. Whatever program you might be lucky enough to qualify for you WILL be properly trained. And, BTW that is from the Corps's perspective not yours.

WAR TO THE KNIFE - THE KNIFE TO THE HILT