programming

[Vemo]

i need help with programming.
i have been looking for hours and no help to all of my questions.
i know html, xhtml, css, and i really want to learn java.
is there a good link to learn java free?
also, is there anything else i need to learn?
also, what programs can i use to view apk files?
what type of files are there?
i know of
.mf .odex .dex .xml .png
what else is there?

 

[sitlet]

is there a good link to learn java free?

Here's a bunch

Or go to a library and get some books.