Hi,
I'd say this forum has the same rules as normal human communication.
Though since this IS a piano forum, I'd like to mention...
Be humble but not demotivated and overcritical of yourself, there are many pianists here and some of them will be better than you and some of them will be worse than you. Learn from both those worse than you and those better than you.
You will see many arguments here. Some of them nice simple debates and others with nothing but namecalling. If you get into one, just don't be overly stubborn and try not to call people names
Anyway, I've been playing 11 years now and currently I'm preparing for college auditions. Current repertoire is:
Bach Prelude and Fugue in D minor from WTC1
Beethoven Pastorale Sonata Op. 28
Chopin Scherzo no. 1
Liszt La Leggerierezza
Ravel Alborada del Gracioso
and if I have time I'm thinking of picking up Rach 2.