I am a old man (43) who is working on Grade 10 technique. When I started, "Right," says I, "this is all easy." Then I tried to play through it, and found that it wasn't quite as easy as I had thought. In this book of scales and chords by a guy named Macfarren there are really good exercises I am using that are helping me with the Grade 10 technique. They cover almost everything in the Technical Requirements and do each thing with a little bit extra oomph, so you get better at it. Example: arpeggios, not just hands together from every inversion, but from every inversion IN CONTRARY MOTION -- all the possibilities. Same thing with scales. The only thing that doesn't quite get covered is the alternate-note chords, because Macfarren does them in a different way (but it would probably be good to do it). Many of the Macfarren exercises are only for two octaves, but if you do them, they really help with the Gr 10. I have been supplementing my Gr 10 practice with Macfarren for a couple of weeks now and the results have been immediate. I recommend it!