Riccardo you haven't asked a question, or given any indication of how you want help. Do you need suggestions for graphic design? Are you using HTML forms? Are you writing a mobile interface? Do you want help with writing a new module? Or with JSP?
You haven't said what you have learnt already, and what you have read already either. With such a vague email it is almost impossible to help you.
Then send an email that follows the advice on that web page. Even though it is for Stackoverflow, it has a lot of good advice for this mailing list too.
Nick