Need lots of advice

[Dingir]

Not sure if this is the proper place for this but I am looking for some advice
I am new to riding and bought my first bike, a bashan storm 250, this morning.
I am looking for some help on some things,
-What gasoline to run? the shop i bought it from had it filled already
-what oil to use?
-how to find the fuel filter/air filter.
-how to use and fill the reserve tank, and will the bike die and i have to switch it over to reserve or does it just go to reserve automatically?
-I loctited the turn signals, the big bolt on the rear brake, and that was pretty much it, what else should I loctite?
-when should i change the oil, the guy at the shop said he puts fresh oil in every bike and gets rid of the china oil.

Thats all I have off the top of my head right now, thanks for any insight you guys have on those