Having worked in several "stealerships", I'll try and help.
Regardless of your marital status, sex, or whether or not the item is considered a "luxury item", it all boils down to this:
You need to have a credit history, established through previous lines of credit, mortgages, vehicle payments, credit cards, etc. You can have BAD credit, and still get a loan. The only thing to bear in mind with having BAD credit, is that you will not qualify for low APRs.
A very good rule of thumb is to ALWAYS BE PREPARED to put down at least 1/3 of the dealer's asking price. Once you are alright with that, you can negotiate better financing, and play around with the back-end deals that the F&I manager will bombard you with.
If you are serious about buying a bike, make sure you make that CLEAR to the salesperson. Tell them you are ready to buy TODAY, and also be prepared. Odds are, if you get a good salesperson, and send out all the green-light signals, they will work harder for you. Have your checkbook, a major credit card, and your driver's license ready. Once you establish these things, and have decided on your bike, sit down and listen to the salesperson (your courtesy will go a long way). Explain your situation to the salesperson, including things like what you can afford as a monthly payment. and then sit back and let the salesperson do their job. Remember, they work for YOU! It's in their best interest to shop your loan out to get the best rates, including manufacturer's offers, rebates, etc.
Bear in mind that the dealership is in it for the money. They will try and wring out the most they can out of the deal. DON'T be sucked in by a low monthly payment, or by "low introductory" rates. They sound sweet when you are all hyped about riding away on your new bike. When you read your paperwork, or get the payment notices, reality will set in.
Don't be afraid to say NO at ANY time to the deal. Salespeople are trained to read you, and get you emotionally attached to the bike you were looking at, and get you pumped-up to get the deal done. You can always get the dealer's best "deal" and take it to your bank for comparison.
I could go on and on about the "Stealership" mentality, and how bike sales works, but I'd really go off on a tangent. In short, I hope this helps. Post back with any specific questions, or points that you need cleared up.
Good luck, and have FUN!