Financing & Loan for new Motorcycle?

I'll try to make this as short as I can, so its not tedious to read.I've been riding a trail bike, Honda CRF230F for around a year now at a nearby Motocross track. The bike for one isn't built for motocross, and it is about time for me to move up. I'm looking at getting a 250F from Yamaha, or Honda, ok, now onto the dilemma.I'm 19 years old, currently enrolled in college, so I dont have a full-time job. I'm still under my parents, so they take care of mostly everything, my father is the one who bought the 230F. He's gone and unavaliable for awhile now, so I'm unable to ask for his help on this subject, so I am posting in yah.answers.I'm inexperienced in purchasing a new bike, or automobile for that matter (yes, i've decided new, over used). The bike I'm looking at getting is around $6,500.00. I make less than that a year with my weekend job.How do I go about buying this bike from a dealer? Set up financing for 24 months, or 60 months? How much per month?Also, would I need a loan? How do I go about getting pre-approved for a motorcycle loan? I'm not even sure how loans work... would i have to pay that off every month along with the bike payments?sorry for the long post. I'd like to see what you guys think, then talk to my dad when i get a chance, any help/tips will help,Thanks(PS if your wondering why he just doesnt buy the 250F for me, he has already let me know that he will not be buying another bike for me, i'll have to do it myself)