adult learn piano...how

Here are the suggestions:
1. Practise more scales
~ Scales are not only for examination, but it can make you easier to handle the pieces, also your fingers could be more 靈活.....

2. Don't practise too much per time (每一次練琴不可練太久)
~ It is a waste of time, because you may lose your concentration if you practise too much per time. You should practise at least one time per day, rather than practise it once per 3 days for 3 hours.

3. Listen more classical music
~ especially Mozart's , because you can get more musical ideas or feeling about the pieces during listening

4. Buy some skills practise book
~ i suggest you to buy HANON~ it costed only $18 in TOM LXX
All the skills you need would be shown in the book~ Don't wait until you are at higher levels~ you should practise it as soon as possible~

Exceptional good!

Not only listen piano music but also any kind of classical music.

You should practice ~3 hours a day.
If you want to learn faster, you should buy more recordings, and you should find a good teacher and you should pay all the attention on it. I sure that you will improve a lot.