Never tamper with the cooling system when hot, as it is a pressured system. This may cause air bubbles or air locks, causing long term engine damage.
The cooling system and water level should only be checked when the car is cold and the cooling system is un-pressurised
Most new batteries in this day and age are maintenance free and sealed units and come with two year warranties. If ever you find the need to replace you battery always make sure it is the specified battery for your make and model of your vehicle.
On most vehicles tyres are rotatable front to rear. It’s advisable to rotate front to rear and to do balance and alignment every 10 000kms to avoid uneven wear. This is to make sure you get the full life out of your tyres.