The piano literature is so huge, so absurdly unabridged that you can use original repertory from your first seat at the piano until you reach your limit. I think that is part of the job of a teacher to look for the works s/he needs, to develop a methodology to each student based on her/his possibilities and without gaps, either of technique or theory or even style/aesthetics. In the other hand, sometimes the student want to learn a piece that was not written for the piano. Here I consider a possible exception, but paying attention to the effective results of the transcription played on its new medium, i.e., the piano. There are works that suit very well, other just don't.
Dear PianoOne: I mostly agree with RC and Catty opinions, but I am completely against the use of arrangements. The piano literature is so huge, so absurdly unabridged that you can use original repertory from your first seat at the piano until you reach your limit. I think that is part of the job of a teacher to look for the works s/he needs, to develop a methodology to each student based on her/his possibilities and without gaps, either of technique or theory or even style/aesthetics. In the other hand, sometimes the student want to learn a piece that was not written for the piano. Here I consider a possible exception, but paying attention to the effective results of the transcription played on its new medium, i.e., the piano. There are works that suit very well, other just don't. Finally, run away from easier adaptations with all your forces. Slaughtered versions of Beethoven's opus 27/2, that sounds like a pale and useless shadow of the original are really uninviting, to say the least. Best wishes!
The rest of my comment to all of you is:Well, some are not against using arrangements and some (at least one) are.Personally, I cannot say I am totally against it but I just wanted to know if using not-original pieces can "harm" in some way. My impression is that the answer is 'NO'.I do want to learn step by step in order to gain the skills, technique and so on. I do also enjoy learning arranged pieces - as long as I feel it is challenging and teaches me. At the same time, I could not but admit that from the very beginning I did look for "real" or original pieces to learn even outside the lessons, and my teacher knows that of course.At last, I just wanted to know if there is concrete reason why not to learn from such books (that contain arranged pieces). Alternatively - wanted to know if the way I am learning is good.I'd be glad to read some more answers!