As a complement, you could also try the recent publications from russian historians, who studied russian / polish sources scarcely used by westerners : Lieven, Sokolov, Mihabidze...
This gives a completeley different perspective on the period, particularly on the 1812-1814 years.
And as an entertainment you could consider Georges Blond, "La Grande Armée" (in english). Not a research work nor a first-hand testimony, but an epic tell of the events, with most of the anecdots you will find in dozen Memoirs.
In Paris, places of major interest (in a napoleonic perspective) are Invalides with tomb and army museum, perhaps Marine museum with magnificent mock-ups at Trocadéro, Arc de Triomphe at the end of Champs Elysées, Obélisque de la Concorde at the opposite end (with much shopping inbetween, and in small parallel streets) then straightforward Tuileries garden (the palace was erased), Louvres with some major paintings (and nice artefacts and books at the library), and on the opposite site of rue de Rivoli the Place Vendôme with the column (and world-famed jewelry - go there on sunday or single).
Specialized libraries are mostly in french, and the two most affordable have turned into on-line sites.
If you don't master french, please don't juge us by the reactions of taxi drivers and pub waiters: they want to be up to their worldwide reputation. But food and drink should be ok.