Hey guys, i'm new to the forum so hi everyone

i am about to turn 17 and buy the Yamaha 125... it is a gorgeous bike and from what i have read (hundereds of reviews ect.) it is reliable and fairly cheap to run.
The thing i need help with is the maintenance. I don't know tooo much about bikes and i know that supersports such as the yamaha need regular maintanence. Can anyone give me some advice on what kind of things on those bikes need to be kept in check, changed regularly or refilled ect.. any help would be awesome. Also if anyone owns one, or has done, then i would love to know what you think of it! Cheers Guys.