If you're asking about political experience, not at all. President Obama was an Illinois State Senator and US Senator prior to his election as President. Abraham Lincoln, by contrast, had no experience at the Federal level. US Grant had never held office prior to his election. There are numerous other examples.
Obama
Presidents have to be at least thirty-five years old in the US.
In order to become president, you have to be at least 35 years old.
Most Presidential speeches have been written and rehearsed in advance and the President has had a copy, or at least a very detailed outline, on the podium to refer to. Of course the last several Presidents have had electronic teleprompters and the current President seems to rely very heavily on this technology.
The cabinet members head the 15 Executive Departments that are under the President (departments of State, Defense, Treasury, Justice, Agriculture, Commerce, Labor, etc.) and provide advice to the president. They, at least in theory, are chosen for their expertise and experience in the area in which they work .
No- he is usually considered one of the least successful full-term presidents.
The current president, at least until the results of the recent election are announced, is Mohammed Karzai.
The bodies of Presidents Abraham Lincoln and John F. Kennedy both lay in state in the East Room
George Washington and James Monroe were elected President with the least opposition.
This question isn't very well written but I believe you are asking if a child can be President of the U.S. The answer would be no. You must be at least 35 years of age to be President.
Political Parties do not have presidents. They have representatives, but not presidents.
Every party that has had incumbent presidents in office has renominated at least one of them except the Whig Party.