http://www.paris-travel-guide.info/eiffel-tower-tours-paris/
Using metro in Paris, France, how to get places?
To get to the Musee National d’Art Moderne-Centre Georges Pompidou
1. Board the metro at Sevres-Babylone, line #? & direction ?
2. Get off the train at what stop?
3. Transfer to ? line and ? direction.
4. Get off again at what station?
To get to Musee d’Orsay
1. Board the metro at Sevres-Babylone, line #? & direction ?
2. Get off the train at what station?
To get too Basilique du Sacre-Coeur
1. Board the metro at Sevres-Babylone, line #? & direction ?
2. Get off the train at what stop?
3. Transfer to ? line and ? direction.
4. Get off again at what station?
Then, how would you get to Pantheon, Hotel des Invalides, Eiffel Tower/Tour Eiffel and the Arc de Triomphe if you always board at Sevres-Babylone in the same format as above?
Thank you to telling me how to get to any one of these places even!! 
Merci beaucoup, marzetwo!
I’ll walk to those places, when looking at your link I realised how close they are.
I’ll give you a few examples, and then you can find your own routes on the map with the link below. sdon’t try to plan all your routes in advance !! (by the way : obviouslay you stay at sèvres-babylone : excellent choice !)
To get to the Musee National d’Art Moderne-Centre Georges Pompidou
1. Board the metro at Sevres-Babylone, line 10 direction Gare d’Austerlitz
2. Get off the train at Odéon
3. Transfer to line 4 and direction Porte de Clignancourt
4. Get off again at Les Halles
what I would actually do: walk from Sèvres-bab to etiher Saint-Sulpice of Odéon station (which are nearby) to go directly on line 4.
To get to Musee d’Orsay
1. Board the metro at Sevres-Babylone, line 12 & direction Porte de La Chapelle
2. Get off the train at Assemblée nationale
what I would actually do : just walk there, it’s a nice 15 mn walk
To get to Basilique du Sacre-Coeur
1. Board the metro at Sevres-Babylone, line 12 & direction Porte de La Chapelle
2. Get off the train at either
Jules Joffrin + Montmartrobus (arrêt place du Tertre)
or
Abbesses + Funiculaire
Pantheon, Hotel des Invalides : not really far : walk, really not far
Tout eiffel : line 10 to La motte piquet, then line 6 direction Etoile, get off at either Bir Hakeim or Trocadero (best approach is from there)
Arc de triomphe : you can reach Charles de Gaulle-Etoile station with a combination of either line 12 & 1 through Concorde or line 10 & 6 through la motte Picquet : same timing but the secdond route is scenic because it goes above the river.
… now you’re on your own !
TOUR d’EIFFEL Paris, France