In regards to travel within Paris and in Ile-de-France, you will be able to use your Paris 2018 Travel Card.
To familiarize yourself with the various means of transport in the capital by metro, Tram or RER, TER you can go to the following link : RATP
You can also enjoy the pleasure of visiting the capital by bike thanks Velib’ (self-service) – Site also available in English, French and Spanish.
But also to visit and walk around outside of Paris, you can use self-service cars: Auto Lib
To visit Paris by water, the ideal public transport system is called BatoBus. You can enjoy the 9 stations where the boats stop on the Seine at such magnificent Parisian sites as the « Jardin des Plantes/City of fashion, City Hall, the Louvre, the Champs Elysees, Beaugrenelle, Eiffel Tower, the Orsay Museum, St Germain des Prés and Notre Dame.
Enjoy your stay in Paris and have a good week at Paris 2018-Gay Games 10.