No. Age is irrelevant. It depends on if you are able to drive or not. See DVLA booklet D100 (Sections 16 & 17) available from Post Office or refer to link at end of this answer
A driver should take a break when he/she is fatigued. It is recommended that a driver take a break every 2 hrs
a good night sleep
well as you know there is a high risk of injury when driving. But i will take a rough estimate that 2 teens start driving every year.
An elderly person should travel with a group in Turkey or in any foreign country for safety purposes. You should do your research on the customs and laws of the country you plan on visiting.
I will stop for a while and wash my eyes and take a rest and then i will continue my driving
I would look at your state's DMV. They should have resources on how to take that online.
Most auto mechanics will recommend that you get your tires rotated every 5,000 to 10,000 miles that you are driving. I would recommend bringing your car in every 7,000 miles.
It depends on the elderly him or herself.
Teens not only should take driving courses, it's required by law! Lots of helpful information will come from parents, but they will still need to take courses.
If the temperature is over 100 you should call the emergency room and see if you should take the person in.
This should be done every 36000mil or 60000 km to be sure, they are rated to last as long as 100km but you needs to take driving habits into consideration.
Yes you can take a defensive driving course online on your own time. However do I suggest that you should take driving tests in person because it is better to learn that way.