U can just get there by RER, just like the MTR in HK.
U can get up the tower by either taking the esculator or by walking up.There are total 3 different levels that u can get up by buying the tickets. The upper u get, the more u have to pay.
The tower is very beauiful, especially when u arrive there during the magic hour, near the sunset. Apart from sightseeing, u have nothing to do there.
1. How to get there?
Take a flight to Paris and take MTR + few minute walk
2. What can we do there?
Take the lifts to upper stair for sight seeing
3. History/General info http://en.wikipedia.org/wiki/Eiffel_Tower
4. Feeling & comments
No need to go to the top tier as it is much more expensive. The view is similar to a lower tier.
Lots of people and long queue