Well, there will always be small, microscopic imperfections with any paintwork. Nothing is perfect but you shouldn't be able to see it if it's brand new. Do you see any swirl marks? There shouldn't be any dings.....if there are, then the dealer didn't keep it in good condition. The lines are probably light scratch marks/marring caused by the dealer touching it with ungloved hands, wiping and dusting it with cheap microfiber towels and improper techniques, customers looking, touching and sitting on the bike (if it was in the showroom), etc.
In any case, marring and light scratch marks are common even on new bikes because oftentimes the dealer uses improper cleaning techniques to maintain it and other customer touching it. I bought mine at a small dealership where they only had two R3s and I took it home as soon as it came in so no others can check it out and touch it besides me. Mine was perfect, no visible imperfections. I went to another dealer to look at their R3s and they were in horrible condition. Marring and swirls all over the bikes. That and their horrible prices made me buy mine from the other dealer which I'm very glad that I did.
There is no real easy way to fix dings by yourself but the lines (assuming they are marring) can be easily fix by polishing the paint. Hope this helps.