Plugin Coding

Java is multi-platform, it's not made where you have to compile it differently for each computer. it runs universal with a Java client.

I don't know where you can learn Java, I'm a web developer. But I thought I'd like to point that out.

Java was specifically made for multiplatform usage, so any plugin should work on Windows, Mac and Linux.

You can learn the basics of Java online, which will build the fundation for your plugin coding.
http://www.learnjavaonline.org/

http://www.youtube.com/yewtree8

I run a couple of episodes that show you the basics

I believe coding on any platform should be the same. Also, you can look at a variety of videos on youtube on how to code bukkit plugins. One person I learned a bit from was TheBCBroz https://www.youtube.com/user/TheBCBroz He has a bunch of tutorials from commands, permissions, kits, config files and more... If you have questions, just ask