routine mintenance..

just bought aveo5 2009 what can i expect as for tools needed ?? how big mess? noticed filter looks to be upside down and on top of motor, not spin on...anything else that i should check for ..preventative..like i said just got it..hoping it to last 200k miles...67k now...what is time frame on oil change light? thanx for any input or advice

For my car, it was typically new copper NGK plugs every 20k miles, and oil change twice a year. Also from my experience the oil change light came on a day or two after I have already done it. So it seems the interval I used was about right. Even though I was using synthetic.