Na sua opiniao quem é a eterna princesa a qual o eu lirico se refere nesse verso

Doulingo is good. you can also watch movies that are in french, i am using this tactic  for japanese  and it a lot. listing to music with  french  lyrics would work well too because  you could absorb  the words while having fun.hope this ! : )

Am i to late to answer your question

Where's the excerpt? also i think the answer is the last one

You can go to the settings and change it from there