few things on ABAP

Hi SDN's,

I have been working on ABAP from past some time, but now that i see lot of new things in ABAP such as WebDynpros, ALV Object Models, OO ABAP, etc....

I want to know few things related to this..

1. What exactly is NetWeaver, and what are the topics covered under this?Any list of topics would be highly apprecitated.

2. Where and what to start regd this concepts?

3. What other than this do i need to do to keep myself upgraded in this?

4. What future have we got in Classic ABAP? Can we rely on this?

5. I have very basic concepts of Java, so how shud i upgrade my Java Skills, is this going to benifit me now, i being a core ABAP'er?

6. What advancements in Java should i go for?

Please help me upgrade myself.

Regards

Pratyusha