Paris is a beautiful city and a large city full of history. There are the major tourist attractions everyone knows about, but there are also the little side-streets with their beautiful buildings, small parks, corners the normal Paris visitor does not normally see. For example the oldest tree in Paris or were the old Roman wall once stood.
If you plan to visit Paris and fancy to experience the Paris life and history away from the big tourist places, have a look at Claire Waddington and her customisable Paris tours. Claire is a experienced guide of the Paris area, she lives there, and fluent in both French and English.
You can also find her on Twitter and on Periscope under @clairewad, where she regularly takes her viewers around the City of Light. If you are a fan of Periscope it is definitely worth to check her out (I watch her regularly and love it) and if you lack the means to visit Paris yourself, Claire also offers private guided tours via Periscope.