FlyerTalk contains a great deal of advice, and Paris is one of the most-discussed places, for both on- and off- the beaten path sites. It's not at all clear to me that the OP has taken the time to read such advice, as he certainly seemed to have no specific questions.

I'd also thank Fredd for his/her efforts in helping the rest of us evaluate the reliability of the OP, and the extent to which any of us might be willing to go to provide assistance.