@Sylvie Waxweiler-Willems Hi, you have 2 goals, but one is more important. Goal 1 is to make proper use of your purchase. Goal 2 is to learn harmony through your fingers and possibly your voice. The latter is what actually matters. To learn harmonie au clavier, you definitely need a teacher or guide, however, you cannot limit yourself to her book: Your future teacher may have a lot to offer you, but through a different method. I cannot recommend teachers for you, I suggest checking on SuperProf first, then check out Le Bon Coin: I found a good teaching gig through there as well as an excellent French teacher, despite the fact that it has an informal, online marketplace feel. You will need to spend quality time in finding the right teacher, treat it like a major job or housing search. You will lose a lot of precious time if you have to bounce from teacher to teacher. Key words are 'écriture musicale' or 'harmonie' or 'cours d'harmonie;' I dont think most recent graduates from the Paris Conservatoire will mention 'harmonie au clavier' in their bio, even if they might still have the capabilities to teach it. Look beyond fancy degrees find a good harmony teacher; there may be an organist or violinist who doesn't have the direct qualifications on paper, but are actually better able to guide you. I recommend an experienced teacher, who is open minded and can adapt their teaching for your goals (hard for a lot of French teachers to do). Many French teachers cab be very fixed in their methods, so find someone who is flexible. I'm skeptical about harmony au clavier at a distance, as I find I can never hear the doublings when at a distance. You will need to put considerable upfront work in finding the right teacher, consider making an ad as well as contacting teachers directly. Best of luck