Starting-blocks With c harmonica

Hi DavidMy Name si Benjamin and i am French (sorry for my  english)

I have just registried myself to Blues Harmonica and  I am very beginner. My idea was to do it level by level with the LoA but i saw that i may need an A harmonica, unfortunately i have Orly a C one

otherwise, i enter in "lessons" and i saw there was a special one for C harmonica in level 1 but for one side, it dosn t seem to be as complete as the LaO level one and for the other side what about the others levels with C harmonica?

Does that means that i can enjoy only this specific lessons With a C harmonica? And I won t be able to enjoy the remain lessons 1 and this other levels Proposed? That means that I am obliged to buy a A Harmonica if I want to enjoy your training?

and the second point is to know if it s possible to put subtitle to your presentation so as to understand you better?

thanks

benjamin