java on tomcat, I am lost!

Hello!

I have some little problems with some java servlets but I am lost and  
need some help?

-> Where is the correct place to ask those questions?

The problem is about the usage of javac and classpath usage. I am a C+ 
+ programmer and have not the time to read a book (unfortunately). But  
its not about programming,
its just javac which is new to me.

Thank you for your help!

kind regards,

Robert