The thing must come with a quick reference Guide / Manual,.. this must answer you small queries.
You can drive at 100 kph, but avoid sudden acceleration and driving at high speed fro longer time periods.
Regarding tyre pressures and other maintenance, you should check tyre pressure atleast once in a week or fortnightly. as correct tyre pressure is directly related to the comfort of ride and fuel economy.
If ur Car has Automatic transmission then its better to change the Transmission oil and filter both at 60-70K kms. if it is Manual, than no need to change until u feel, it has lost it colour and smells burnt stc.
keep an eye on break oil and power steering oil.
And lastly New ride Mubarak ho, Drive safe and have fun