you wont need extra tutorials for piana i thnk learn "notes". how to do a chord, ladders, rhytm, tonal-steps like prim etc. every instrument is divided into 12 tones :) so if you can handle tones and know where to push so that a certain tone comes out you can teach yourself. :) I think thats also a good way to find a really personal style. The only way to learn playing faster etc. is to practice practce and pratice your brain to use your fingers right. so play play play play play play what you can. :) greetz