Blah blah warranty blah blah void blah blah. BS. Do the service yourself and rest assured that no one screwed with your baby or made an "oops". I trust very few with my bike plus it brings great pride in knowing that I maintain it myself. PLus you learn about your bike as you go.
But, the disclaimer, if you do not have the right tools and knowhow and/or are not willing to learn, take it to the shop. If you do it yourself, keep records of what you did , when, mileage, and keep receipts of supplies (oil, filters, etc.). That is to CYA.
For the first service, chainge the oil, the filter, check/adjust the chain, adjust the idle, then just give a thorough once over for loose bolts and check air pressure. As for oil suggestions you will get tons of advice on that one. General/conservative advice, use standard dino oil like HP4 (Honda) and a Suzuki filter for the first few oil changes. Then if you choose, LEARN about synthetics and make an educated decision on when to switch and what to use. I used HP4 for first 3 oil changes, now I use only Amsoil full synthetic and Suzuki filters. IMHO, synthetic is the way to go and makes the Busa run like a top but it is more expensive.
Again, LEARN first, then make your own decision, but please work on your own bike unless you are just not mechanically inclined and are afraid to do it. You will be happy.