You can learn from books, Internet tutorials. There are lot of tutorials on Internet just type photoshop tutorials in browser. Good starting point are official Adobe video tutorials. See related link.

There are several pages on the internet for tutorials on Visual Basic. Google them.

If you have more specific questions, ask them here. For a general introduction, search the Internet for tutorials, or go directly to java.sun.com.

If you have more specific questions, ask them here. For a general introduction, search the Internet for tutorials, or go directly to java.sun.com.

If you have more specific questions, ask them here. For a general introduction, search the Internet for tutorials, or go directly to java.sun.com.

If you have more specific questions, ask them here. For a general introduction, search the Internet for tutorials, or go directly to java.sun.com.

I recommend that you look for tutorials in the internet

or

grab a copy of magazines (about manga) in the bookstore

In my opinion, try to learn as much as you can by yourself! Just explore. I also used some YouTube tutorials. If video tutorials don't work for you, the Internet has plenty of written tutorials, and so does Adobe.