well this has been asked and answered a billion times but the basics are:
Locktight ALL nuts and bolts, if you don't parts WILL rattle off while riding
clean and re-oil airfilter after every ride
Change your engine oil to a mineral oil before you even ride the thing, then change regularly
grease all moving parts
check tire pressure regularly
Check Chain tension all the time, they can come loose and slip off wrecking your engine, too tight or loose are just as bad as each other,
before starting the bike for the first time do your valve clearances, then after the first ride do them again, then again after the run-in is finished
there's heaps more but I think those are the important ones, do a search and will find all the info you need.
good luck with the bike and welcome to the forum