According to your point of view some methods of learning French may be better than others. The best way to learn French is here. Some learn vocally others learn in a better way through listening. There are several methods of teaching someone. It all depends on you which method is best for you.
The most efficient way to learn is through Internet. You can learn French by reading, watching and writing through online lessons. You can learn French at your own comfort through online lessons very easily.
The reason learning French through internet is that it is very cheap. Online method of learning French is far cheaper than learning French through private tutor. You have to pay just one time fee for online course.